diff options
Diffstat (limited to 'gc/cord')
| -rw-r--r-- | gc/cord/README | 31 | ||||
| -rwxr-xr-x | gc/cord/SCOPTIONS.amiga | 14 | ||||
| -rw-r--r-- | gc/cord/SMakefile.amiga | 20 | ||||
| -rw-r--r-- | gc/cord/cord.h | 327 | ||||
| -rw-r--r-- | gc/cord/cordprnt.c | 2 | ||||
| -rw-r--r-- | gc/cord/cordtest.c | 1 | ||||
| -rw-r--r-- | gc/cord/ec.h | 70 | ||||
| -rw-r--r-- | gc/cord/gc.h | 754 | ||||
| -rw-r--r-- | gc/cord/private/cord_pos.h | 118 |
9 files changed, 2 insertions, 1335 deletions
diff --git a/gc/cord/README b/gc/cord/README deleted file mode 100644 index 6210145..0000000 --- a/gc/cord/README +++ /dev/null @@ -1,31 +0,0 @@ -Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. - -THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED -OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - -Permission is hereby granted to use or copy this program -for any purpose, provided the above notices are retained on all copies. -Permission to modify the code and to distribute modified code is granted, -provided the above notices are retained, and a notice that the code was -modified is included with the above copyright notice. - -Please send bug reports to Hans-J. Boehm (boehm@sgi.com). - -This is a string packages that uses a tree-based representation. -See cord.h for a description of the functions provided. Ec.h describes -"extensible cords", which are essentially output streams that write -to a cord. These allow for efficient construction of cords without -requiring a bound on the size of a cord. - -de.c is a very dumb text editor that illustrates the use of cords. -It maintains a list of file versions. Each version is simply a -cord representing the file contents. Nonetheless, standard -editing operations are efficient, even on very large files. -(Its 3 line "user manual" can be obtained by invoking it without -arguments. Note that ^R^N and ^R^P move the cursor by -almost a screen. It does not understand tabs, which will show -up as highlighred "I"s. Use the UNIX "expand" program first.) -To build the editor, type "make cord/de" in the gc directory. - -This package assumes an ANSI C compiler such as gcc. It will -not compile with an old-style K&R compiler. diff --git a/gc/cord/SCOPTIONS.amiga b/gc/cord/SCOPTIONS.amiga deleted file mode 100755 index 2a09197..0000000 --- a/gc/cord/SCOPTIONS.amiga +++ /dev/null @@ -1,14 +0,0 @@ -MATH=STANDARD -CPU=68030 -NOSTACKCHECK -OPTIMIZE -VERBOSE -NOVERSION -NOICONS -OPTIMIZERTIME -INCLUDEDIR=/ -DEFINE AMIGA -LIBRARY=cord.lib -LIBRARY=/gc.lib -IGNORE=100 -IGNORE=161 diff --git a/gc/cord/SMakefile.amiga b/gc/cord/SMakefile.amiga deleted file mode 100644 index 5aef131..0000000 --- a/gc/cord/SMakefile.amiga +++ /dev/null @@ -1,20 +0,0 @@ -# Makefile for cord.lib -# Michel Schinz 1994/07/20 - -OBJS = cordbscs.o cordprnt.o cordxtra.o - -all: cord.lib cordtest - -cordbscs.o: cordbscs.c -cordprnt.o: cordprnt.c -cordxtra.o: cordxtra.c -cordtest.o: cordtest.c - -cord.lib: $(OBJS) - oml cord.lib r $(OBJS) - -cordtest: cordtest.o cord.lib - sc cordtest.o link - -clean: - delete cord.lib cordtest \#?.o \#?.lnk diff --git a/gc/cord/cord.h b/gc/cord/cord.h deleted file mode 100644 index 584112f..0000000 --- a/gc/cord/cord.h +++ /dev/null @@ -1,327 +0,0 @@ -/* - * Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - * - * Author: Hans-J. Boehm (boehm@parc.xerox.com) - */ -/* Boehm, October 5, 1995 4:20 pm PDT */ - -/* - * Cords are immutable character strings. A number of operations - * on long cords are much more efficient than their strings.h counterpart. - * In particular, concatenation takes constant time independent of the length - * of the arguments. (Cords are represented as trees, with internal - * nodes representing concatenation and leaves consisting of either C - * strings or a functional description of the string.) - * - * The following are reasonable applications of cords. They would perform - * unacceptably if C strings were used: - * - A compiler that produces assembly language output by repeatedly - * concatenating instructions onto a cord representing the output file. - * - A text editor that converts the input file to a cord, and then - * performs editing operations by producing a new cord representing - * the file after echa character change (and keeping the old ones in an - * edit history) - * - * For optimal performance, cords should be built by - * concatenating short sections. - * This interface is designed for maximum compatibility with C strings. - * ASCII NUL characters may be embedded in cords using CORD_from_fn. - * This is handled correctly, but CORD_to_char_star will produce a string - * with embedded NULs when given such a cord. - * - * This interface is fairly big, largely for performance reasons. - * The most basic constants and functions: - * - * CORD - the type fo a cord; - * CORD_EMPTY - empty cord; - * CORD_len(cord) - length of a cord; - * CORD_cat(cord1,cord2) - concatenation of two cords; - * CORD_substr(cord, start, len) - substring (or subcord); - * CORD_pos i; CORD_FOR(i, cord) { ... CORD_pos_fetch(i) ... } - - * examine each character in a cord. CORD_pos_fetch(i) is the char. - * CORD_fetch(int i) - Retrieve i'th character (slowly). - * CORD_cmp(cord1, cord2) - compare two cords. - * CORD_from_file(FILE * f) - turn a read-only file into a cord. - * CORD_to_char_star(cord) - convert to C string. - * (Non-NULL C constant strings are cords.) - * CORD_printf (etc.) - cord version of printf. Use %r for cords. - */ -# ifndef CORD_H - -# define CORD_H -# include <stddef.h> -# include <stdio.h> -/* Cords have type const char *. This is cheating quite a bit, and not */ -/* 100% portable. But it means that nonempty character string */ -/* constants may be used as cords directly, provided the string is */ -/* never modified in place. The empty cord is represented by, and */ -/* can be written as, 0. */ - -typedef const char * CORD; - -/* An empty cord is always represented as nil */ -# define CORD_EMPTY 0 - -/* Is a nonempty cord represented as a C string? */ -#define CORD_IS_STRING(s) (*(s) != '\0') - -/* Concatenate two cords. If the arguments are C strings, they may */ -/* not be subsequently altered. */ -CORD CORD_cat(CORD x, CORD y); - -/* Concatenate a cord and a C string with known length. Except for the */ -/* empty string case, this is a special case of CORD_cat. Since the */ -/* length is known, it can be faster. */ -/* The string y is shared with the resulting CORD. Hence it should */ -/* not be altered by the caller. */ -CORD CORD_cat_char_star(CORD x, const char * y, size_t leny); - -/* Compute the length of a cord */ -size_t CORD_len(CORD x); - -/* Cords may be represented by functions defining the ith character */ -typedef char (* CORD_fn)(size_t i, void * client_data); - -/* Turn a functional description into a cord. */ -CORD CORD_from_fn(CORD_fn fn, void * client_data, size_t len); - -/* Return the substring (subcord really) of x with length at most n, */ -/* starting at position i. (The initial character has position 0.) */ -CORD CORD_substr(CORD x, size_t i, size_t n); - -/* Return the argument, but rebalanced to allow more efficient */ -/* character retrieval, substring operations, and comparisons. */ -/* This is useful only for cords that were built using repeated */ -/* concatenation. Guarantees log time access to the result, unless */ -/* x was obtained through a large number of repeated substring ops */ -/* or the embedded functional descriptions take longer to evaluate. */ -/* May reallocate significant parts of the cord. The argument is not */ -/* modified; only the result is balanced. */ -CORD CORD_balance(CORD x); - -/* The following traverse a cord by applying a function to each */ -/* character. This is occasionally appropriate, especially where */ -/* speed is crucial. But, since C doesn't have nested functions, */ -/* clients of this sort of traversal are clumsy to write. Consider */ -/* the functions that operate on cord positions instead. */ - -/* Function to iteratively apply to individual characters in cord. */ -typedef int (* CORD_iter_fn)(char c, void * client_data); - -/* Function to apply to substrings of a cord. Each substring is a */ -/* a C character string, not a general cord. */ -typedef int (* CORD_batched_iter_fn)(const char * s, void * client_data); -# define CORD_NO_FN ((CORD_batched_iter_fn)0) - -/* Apply f1 to each character in the cord, in ascending order, */ -/* starting at position i. If */ -/* f2 is not CORD_NO_FN, then multiple calls to f1 may be replaced by */ -/* a single call to f2. The parameter f2 is provided only to allow */ -/* some optimization by the client. This terminates when the right */ -/* end of this string is reached, or when f1 or f2 return != 0. In the */ -/* latter case CORD_iter returns != 0. Otherwise it returns 0. */ -/* The specified value of i must be < CORD_len(x). */ -int CORD_iter5(CORD x, size_t i, CORD_iter_fn f1, - CORD_batched_iter_fn f2, void * client_data); - -/* A simpler version that starts at 0, and without f2: */ -int CORD_iter(CORD x, CORD_iter_fn f1, void * client_data); -# define CORD_iter(x, f1, cd) CORD_iter5(x, 0, f1, CORD_NO_FN, cd) - -/* Similar to CORD_iter5, but end-to-beginning. No provisions for */ -/* CORD_batched_iter_fn. */ -int CORD_riter4(CORD x, size_t i, CORD_iter_fn f1, void * client_data); - -/* A simpler version that starts at the end: */ -int CORD_riter(CORD x, CORD_iter_fn f1, void * client_data); - -/* Functions that operate on cord positions. The easy way to traverse */ -/* cords. A cord position is logically a pair consisting of a cord */ -/* and an index into that cord. But it is much faster to retrieve a */ -/* charcter based on a position than on an index. Unfortunately, */ -/* positions are big (order of a few 100 bytes), so allocate them with */ -/* caution. */ -/* Things in cord_pos.h should be treated as opaque, except as */ -/* described below. Also note that */ -/* CORD_pos_fetch, CORD_next and CORD_prev have both macro and function */ -/* definitions. The former may evaluate their argument more than once. */ -# include "private/cord_pos.h" - -/* - Visible definitions from above: - - typedef <OPAQUE but fairly big> CORD_pos[1]; - - * Extract the cord from a position: - CORD CORD_pos_to_cord(CORD_pos p); - - * Extract the current index from a position: - size_t CORD_pos_to_index(CORD_pos p); - - * Fetch the character located at the given position: - char CORD_pos_fetch(CORD_pos p); - - * Initialize the position to refer to the given cord and index. - * Note that this is the most expensive function on positions: - void CORD_set_pos(CORD_pos p, CORD x, size_t i); - - * Advance the position to the next character. - * P must be initialized and valid. - * Invalidates p if past end: - void CORD_next(CORD_pos p); - - * Move the position to the preceding character. - * P must be initialized and valid. - * Invalidates p if past beginning: - void CORD_prev(CORD_pos p); - - * Is the position valid, i.e. inside the cord? - int CORD_pos_valid(CORD_pos p); -*/ -# define CORD_FOR(pos, cord) \ - for (CORD_set_pos(pos, cord, 0); CORD_pos_valid(pos); CORD_next(pos)) - - -/* An out of memory handler to call. May be supplied by client. */ -/* Must not return. */ -extern void (* CORD_oom_fn)(void); - -/* Dump the representation of x to stdout in an implementation defined */ -/* manner. Intended for debugging only. */ -void CORD_dump(CORD x); - -/* The following could easily be implemented by the client. They are */ -/* provided in cordxtra.c for convenience. */ - -/* Concatenate a character to the end of a cord. */ -CORD CORD_cat_char(CORD x, char c); - -/* Concatenate n cords. */ -CORD CORD_catn(int n, /* CORD */ ...); - -/* Return the character in CORD_substr(x, i, 1) */ -char CORD_fetch(CORD x, size_t i); - -/* Return < 0, 0, or > 0, depending on whether x < y, x = y, x > y */ -int CORD_cmp(CORD x, CORD y); - -/* A generalization that takes both starting positions for the */ -/* comparison, and a limit on the number of characters to be compared. */ -int CORD_ncmp(CORD x, size_t x_start, CORD y, size_t y_start, size_t len); - -/* Find the first occurrence of s in x at position start or later. */ -/* Return the position of the first character of s in x, or */ -/* CORD_NOT_FOUND if there is none. */ -size_t CORD_str(CORD x, size_t start, CORD s); - -/* Return a cord consisting of i copies of (possibly NUL) c. Dangerous */ -/* in conjunction with CORD_to_char_star. */ -/* The resulting representation takes constant space, independent of i. */ -CORD CORD_chars(char c, size_t i); -# define CORD_nul(i) CORD_chars('\0', (i)) - -/* Turn a file into cord. The file must be seekable. Its contents */ -/* must remain constant. The file may be accessed as an immediate */ -/* result of this call and/or as a result of subsequent accesses to */ -/* the cord. Short files are likely to be immediately read, but */ -/* long files are likely to be read on demand, possibly relying on */ -/* stdio for buffering. */ -/* We must have exclusive access to the descriptor f, i.e. we may */ -/* read it at any time, and expect the file pointer to be */ -/* where we left it. Normally this should be invoked as */ -/* CORD_from_file(fopen(...)) */ -/* CORD_from_file arranges to close the file descriptor when it is no */ -/* longer needed (e.g. when the result becomes inaccessible). */ -/* The file f must be such that ftell reflects the actual character */ -/* position in the file, i.e. the number of characters that can be */ -/* or were read with fread. On UNIX systems this is always true. On */ -/* MS Windows systems, f must be opened in binary mode. */ -CORD CORD_from_file(FILE * f); - -/* Equivalent to the above, except that the entire file will be read */ -/* and the file pointer will be closed immediately. */ -/* The binary mode restriction from above does not apply. */ -CORD CORD_from_file_eager(FILE * f); - -/* Equivalent to the above, except that the file will be read on demand.*/ -/* The binary mode restriction applies. */ -CORD CORD_from_file_lazy(FILE * f); - -/* Turn a cord into a C string. The result shares no structure with */ -/* x, and is thus modifiable. */ -char * CORD_to_char_star(CORD x); - -/* Turn a C string into a CORD. The C string is copied, and so may */ -/* subsequently be modified. */ -CORD CORD_from_char_star(const char *s); - -/* Identical to the above, but the result may share structure with */ -/* the argument and is thus not modifiable. */ -const char * CORD_to_const_char_star(CORD x); - -/* Write a cord to a file, starting at the current position. No */ -/* trailing NULs are newlines are added. */ -/* Returns EOF if a write error occurs, 1 otherwise. */ -int CORD_put(CORD x, FILE * f); - -/* "Not found" result for the following two functions. */ -# define CORD_NOT_FOUND ((size_t)(-1)) - -/* A vague analog of strchr. Returns the position (an integer, not */ -/* a pointer) of the first occurrence of (char) c inside x at position */ -/* i or later. The value i must be < CORD_len(x). */ -size_t CORD_chr(CORD x, size_t i, int c); - -/* A vague analog of strrchr. Returns index of the last occurrence */ -/* of (char) c inside x at position i or earlier. The value i */ -/* must be < CORD_len(x). */ -size_t CORD_rchr(CORD x, size_t i, int c); - - -/* The following are also not primitive, but are implemented in */ -/* cordprnt.c. They provide functionality similar to the ANSI C */ -/* functions with corresponding names, but with the following */ -/* additions and changes: */ -/* 1. A %r conversion specification specifies a CORD argument. Field */ -/* width, precision, etc. have the same semantics as for %s. */ -/* (Note that %c,%C, and %S were already taken.) */ -/* 2. The format string is represented as a CORD. */ -/* 3. CORD_sprintf and CORD_vsprintf assign the result through the 1st */ /* argument. Unlike their ANSI C versions, there is no need to guess */ -/* the correct buffer size. */ -/* 4. Most of the conversions are implement through the native */ -/* vsprintf. Hence they are usually no faster, and */ -/* idiosyncracies of the native printf are preserved. However, */ -/* CORD arguments to CORD_sprintf and CORD_vsprintf are NOT copied; */ -/* the result shares the original structure. This may make them */ -/* very efficient in some unusual applications. */ -/* The format string is copied. */ -/* All functions return the number of characters generated or -1 on */ -/* error. This complies with the ANSI standard, but is inconsistent */ -/* with some older implementations of sprintf. */ - -/* The implementation of these is probably less portable than the rest */ -/* of this package. */ - -#ifndef CORD_NO_IO - -#include <stdarg.h> - -int CORD_sprintf(CORD * out, CORD format, ...); -int CORD_vsprintf(CORD * out, CORD format, va_list args); -int CORD_fprintf(FILE * f, CORD format, ...); -int CORD_vfprintf(FILE * f, CORD format, va_list args); -int CORD_printf(CORD format, ...); -int CORD_vprintf(CORD format, va_list args); - -#endif /* CORD_NO_IO */ - -# endif /* CORD_H */ diff --git a/gc/cord/cordprnt.c b/gc/cord/cordprnt.c index 9c8cc87..8d57f04 100644 --- a/gc/cord/cordprnt.c +++ b/gc/cord/cordprnt.c @@ -233,7 +233,7 @@ int CORD_vsprintf(CORD * out, CORD format, va_list args) if (width == NONE && prec == NONE) { register char c; - c = va_arg(args, char); + c = va_arg(args, int); CORD_ec_append(result, c); goto done; } diff --git a/gc/cord/cordtest.c b/gc/cord/cordtest.c index d11d7dd..d54c65f 100644 --- a/gc/cord/cordtest.c +++ b/gc/cord/cordtest.c @@ -14,6 +14,7 @@ # include "cord.h" # include <string.h> # include <stdio.h> +# include <stdlib.h> /* This is a very incomplete test of the cord package. It knows about */ /* a few internals of the package (e.g. when C strings are returned) */ /* that real clients shouldn't rely on. */ diff --git a/gc/cord/ec.h b/gc/cord/ec.h deleted file mode 100644 index c829b83..0000000 --- a/gc/cord/ec.h +++ /dev/null @@ -1,70 +0,0 @@ -# ifndef EC_H -# define EC_H - -# ifndef CORD_H -# include "cord.h" -# endif - -/* Extensible cords are strings that may be destructively appended to. */ -/* They allow fast construction of cords from characters that are */ -/* being read from a stream. */ -/* - * A client might look like: - * - * { - * CORD_ec x; - * CORD result; - * char c; - * FILE *f; - * - * ... - * CORD_ec_init(x); - * while(...) { - * c = getc(f); - * ... - * CORD_ec_append(x, c); - * } - * result = CORD_balance(CORD_ec_to_cord(x)); - * - * If a C string is desired as the final result, the call to CORD_balance - * may be replaced by a call to CORD_to_char_star. - */ - -# ifndef CORD_BUFSZ -# define CORD_BUFSZ 128 -# endif - -typedef struct CORD_ec_struct { - CORD ec_cord; - char * ec_bufptr; - char ec_buf[CORD_BUFSZ+1]; -} CORD_ec[1]; - -/* This structure represents the concatenation of ec_cord with */ -/* ec_buf[0 ... (ec_bufptr-ec_buf-1)] */ - -/* Flush the buffer part of the extended chord into ec_cord. */ -/* Note that this is almost the only real function, and it is */ -/* implemented in 6 lines in cordxtra.c */ -void CORD_ec_flush_buf(CORD_ec x); - -/* Convert an extensible cord to a cord. */ -# define CORD_ec_to_cord(x) (CORD_ec_flush_buf(x), (x)[0].ec_cord) - -/* Initialize an extensible cord. */ -# define CORD_ec_init(x) ((x)[0].ec_cord = 0, (x)[0].ec_bufptr = (x)[0].ec_buf) - -/* Append a character to an extensible cord. */ -# define CORD_ec_append(x, c) \ - { \ - if ((x)[0].ec_bufptr == (x)[0].ec_buf + CORD_BUFSZ) { \ - CORD_ec_flush_buf(x); \ - } \ - *((x)[0].ec_bufptr)++ = (c); \ - } - -/* Append a cord to an extensible cord. Structure remains shared with */ -/* original. */ -void CORD_ec_append_cord(CORD_ec x, CORD s); - -# endif /* EC_H */ diff --git a/gc/cord/gc.h b/gc/cord/gc.h deleted file mode 100644 index 3061409..0000000 --- a/gc/cord/gc.h +++ /dev/null @@ -1,754 +0,0 @@ -/* - * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers - * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. - * Copyright 1996 by Silicon Graphics. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ - -/* - * Note that this defines a large number of tuning hooks, which can - * safely be ignored in nearly all cases. For normal use it suffices - * to call only GC_MALLOC and perhaps GC_REALLOC. - * For better performance, also look at GC_MALLOC_ATOMIC, and - * GC_enable_incremental. If you need an action to be performed - * immediately before an object is collected, look at GC_register_finalizer. - * If you are using Solaris threads, look at the end of this file. - * Everything else is best ignored unless you encounter performance - * problems. - */ - -#ifndef _GC_H - -# define _GC_H -# define __GC -# include <stddef.h> - -#if defined(__CYGWIN32__) && defined(GC_USE_DLL) -#include "libgc_globals.h" -#endif - -#if defined(_MSC_VER) && defined(_DLL) -# ifdef GC_BUILD -# define GC_API __declspec(dllexport) -# else -# define GC_API __declspec(dllimport) -# endif -#endif - -#if defined(__WATCOMC__) && defined(GC_DLL) -# ifdef GC_BUILD -# define GC_API extern __declspec(dllexport) -# else -# define GC_API extern __declspec(dllimport) -# endif -#endif - -#ifndef GC_API -#define GC_API extern -#endif - -# if defined(__STDC__) || defined(__cplusplus) -# define GC_PROTO(args) args - typedef void * GC_PTR; -# else -# define GC_PROTO(args) () - typedef char * GC_PTR; -# endif - -# ifdef __cplusplus - extern "C" { -# endif - - -/* Define word and signed_word to be unsigned and signed types of the */ -/* size as char * or void *. There seems to be no way to do this */ -/* even semi-portably. The following is probably no better/worse */ -/* than almost anything else. */ -/* The ANSI standard suggests that size_t and ptr_diff_t might be */ -/* better choices. But those appear to have incorrect definitions */ -/* on may systems. Notably "typedef int size_t" seems to be both */ -/* frequent and WRONG. */ -typedef unsigned long GC_word; -typedef long GC_signed_word; - -/* Public read-only variables */ - -GC_API GC_word GC_gc_no;/* Counter incremented per collection. */ - /* Includes empty GCs at startup. */ - - -/* Public R/W variables */ - -GC_API GC_PTR (*GC_oom_fn) GC_PROTO((size_t bytes_requested)); - /* When there is insufficient memory to satisfy */ - /* an allocation request, we return */ - /* (*GC_oom_fn)(). By default this just */ - /* returns 0. */ - /* If it returns, it must return 0 or a valid */ - /* pointer to a previously allocated heap */ - /* object. */ - -GC_API int GC_find_leak; - /* Do not actually garbage collect, but simply */ - /* report inaccessible memory that was not */ - /* deallocated with GC_free. Initial value */ - /* is determined by FIND_LEAK macro. */ - -GC_API int GC_quiet; /* Disable statistics output. Only matters if */ - /* collector has been compiled with statistics */ - /* enabled. This involves a performance cost, */ - /* and is thus not the default. */ - -GC_API int GC_finalize_on_demand; - /* If nonzero, finalizers will only be run in */ - /* response to an eplit GC_invoke_finalizers */ - /* call. The default is determined by whether */ - /* the FINALIZE_ON_DEMAND macro is defined */ - /* when the collector is built. */ - -GC_API int GC_java_finalization; - /* Mark objects reachable from finalizable */ - /* objects in a separate postpass. This makes */ - /* it a bit safer to use non-topologically- */ - /* ordered finalization. Default value is */ - /* determined by JAVA_FINALIZATION macro. */ - -GC_API int GC_dont_gc; /* Dont collect unless explicitly requested, e.g. */ - /* because it's not safe. */ - -GC_API int GC_dont_expand; - /* Dont expand heap unless explicitly requested */ - /* or forced to. */ - -GC_API int GC_full_freq; /* Number of partial collections between */ - /* full collections. Matters only if */ - /* GC_incremental is set. */ - -GC_API GC_word GC_non_gc_bytes; - /* Bytes not considered candidates for collection. */ - /* Used only to control scheduling of collections. */ - -GC_API GC_word GC_free_space_divisor; - /* We try to make sure that we allocate at */ - /* least N/GC_free_space_divisor bytes between */ - /* collections, where N is the heap size plus */ - /* a rough estimate of the root set size. */ - /* Initially, GC_free_space_divisor = 4. */ - /* Increasing its value will use less space */ - /* but more collection time. Decreasing it */ - /* will appreciably decrease collection time */ - /* at the expense of space. */ - /* GC_free_space_divisor = 1 will effectively */ - /* disable collections. */ - -GC_API GC_word GC_max_retries; - /* The maximum number of GCs attempted before */ - /* reporting out of memory after heap */ - /* expansion fails. Initially 0. */ - - -GC_API char *GC_stackbottom; /* Cool end of user stack. */ - /* May be set in the client prior to */ - /* calling any GC_ routines. This */ - /* avoids some overhead, and */ - /* potentially some signals that can */ - /* confuse debuggers. Otherwise the */ - /* collector attempts to set it */ - /* automatically. */ - /* For multithreaded code, this is the */ - /* cold end of the stack for the */ - /* primordial thread. */ - -/* Public procedures */ -/* - * general purpose allocation routines, with roughly malloc calling conv. - * The atomic versions promise that no relevant pointers are contained - * in the object. The nonatomic versions guarantee that the new object - * is cleared. GC_malloc_stubborn promises that no changes to the object - * will occur after GC_end_stubborn_change has been called on the - * result of GC_malloc_stubborn. GC_malloc_uncollectable allocates an object - * that is scanned for pointers to collectable objects, but is not itself - * collectable. GC_malloc_uncollectable and GC_free called on the resulting - * object implicitly update GC_non_gc_bytes appropriately. - */ -GC_API GC_PTR GC_malloc GC_PROTO((size_t size_in_bytes)); -GC_API GC_PTR GC_malloc_atomic GC_PROTO((size_t size_in_bytes)); -GC_API GC_PTR GC_malloc_uncollectable GC_PROTO((size_t size_in_bytes)); -GC_API GC_PTR GC_malloc_stubborn GC_PROTO((size_t size_in_bytes)); - -/* The following is only defined if the library has been suitably */ -/* compiled: */ -GC_API GC_PTR GC_malloc_atomic_uncollectable GC_PROTO((size_t size_in_bytes)); - -/* Explicitly deallocate an object. Dangerous if used incorrectly. */ -/* Requires a pointer to the base of an object. */ -/* If the argument is stubborn, it should not be changeable when freed. */ -/* An object should not be enable for finalization when it is */ -/* explicitly deallocated. */ -/* GC_free(0) is a no-op, as required by ANSI C for free. */ -GC_API void GC_free GC_PROTO((GC_PTR object_addr)); - -/* - * Stubborn objects may be changed only if the collector is explicitly informed. - * The collector is implicitly informed of coming change when such - * an object is first allocated. The following routines inform the - * collector that an object will no longer be changed, or that it will - * once again be changed. Only nonNIL pointer stores into the object - * are considered to be changes. The argument to GC_end_stubborn_change - * must be exacly the value returned by GC_malloc_stubborn or passed to - * GC_change_stubborn. (In the second case it may be an interior pointer - * within 512 bytes of the beginning of the objects.) - * There is a performance penalty for allowing more than - * one stubborn object to be changed at once, but it is acceptable to - * do so. The same applies to dropping stubborn objects that are still - * changeable. - */ -GC_API void GC_change_stubborn GC_PROTO((GC_PTR)); -GC_API void GC_end_stubborn_change GC_PROTO((GC_PTR)); - -/* Return a pointer to the base (lowest address) of an object given */ -/* a pointer to a location within the object. */ -/* Return 0 if displaced_pointer doesn't point to within a valid */ -/* object. */ -GC_API GC_PTR GC_base GC_PROTO((GC_PTR displaced_pointer)); - -/* Given a pointer to the base of an object, return its size in bytes. */ -/* The returned size may be slightly larger than what was originally */ -/* requested. */ -GC_API size_t GC_size GC_PROTO((GC_PTR object_addr)); - -/* For compatibility with C library. This is occasionally faster than */ -/* a malloc followed by a bcopy. But if you rely on that, either here */ -/* or with the standard C library, your code is broken. In my */ -/* opinion, it shouldn't have been invented, but now we're stuck. -HB */ -/* The resulting object has the same kind as the original. */ -/* If the argument is stubborn, the result will have changes enabled. */ -/* It is an error to have changes enabled for the original object. */ -/* Follows ANSI comventions for NULL old_object. */ -GC_API GC_PTR GC_realloc - GC_PROTO((GC_PTR old_object, size_t new_size_in_bytes)); - -/* Explicitly increase the heap size. */ -/* Returns 0 on failure, 1 on success. */ -GC_API int GC_expand_hp GC_PROTO((size_t number_of_bytes)); - -/* Limit the heap size to n bytes. Useful when you're debugging, */ -/* especially on systems that don't handle running out of memory well. */ -/* n == 0 ==> unbounded. This is the default. */ -GC_API void GC_set_max_heap_size GC_PROTO((GC_word n)); - -/* Inform the collector that a certain section of statically allocated */ -/* memory contains no pointers to garbage collected memory. Thus it */ -/* need not be scanned. This is sometimes important if the application */ -/* maps large read/write files into the address space, which could be */ -/* mistaken for dynamic library data segments on some systems. */ -GC_API void GC_exclude_static_roots GC_PROTO((GC_PTR start, GC_PTR finish)); - -/* Clear the set of root segments. Wizards only. */ -GC_API void GC_clear_roots GC_PROTO((void)); - -/* Add a root segment. Wizards only. */ -GC_API void GC_add_roots GC_PROTO((char * low_address, - char * high_address_plus_1)); - -/* Add a displacement to the set of those considered valid by the */ -/* collector. GC_register_displacement(n) means that if p was returned */ -/* by GC_malloc, then (char *)p + n will be considered to be a valid */ -/* pointer to n. N must be small and less than the size of p. */ -/* (All pointers to the interior of objects from the stack are */ -/* considered valid in any case. This applies to heap objects and */ -/* static data.) */ -/* Preferably, this should be called before any other GC procedures. */ -/* Calling it later adds to the probability of excess memory */ -/* retention. */ -/* This is a no-op if the collector was compiled with recognition of */ -/* arbitrary interior pointers enabled, which is now the default. */ -GC_API void GC_register_displacement GC_PROTO((GC_word n)); - -/* The following version should be used if any debugging allocation is */ -/* being done. */ -GC_API void GC_debug_register_displacement GC_PROTO((GC_word n)); - -/* Explicitly trigger a full, world-stop collection. */ -GC_API void GC_gcollect GC_PROTO((void)); - -/* Trigger a full world-stopped collection. Abort the collection if */ -/* and when stop_func returns a nonzero value. Stop_func will be */ -/* called frequently, and should be reasonably fast. This works even */ -/* if virtual dirty bits, and hence incremental collection is not */ -/* available for this architecture. Collections can be aborted faster */ -/* than normal pause times for incremental collection. However, */ -/* aborted collections do no useful work; the next collection needs */ -/* to start from the beginning. */ -/* Return 0 if the collection was aborted, 1 if it succeeded. */ -typedef int (* GC_stop_func) GC_PROTO((void)); -GC_API int GC_try_to_collect GC_PROTO((GC_stop_func stop_func)); - -/* Return the number of bytes in the heap. Excludes collector private */ -/* data structures. Includes empty blocks and fragmentation loss. */ -/* Includes some pages that were allocated but never written. */ -GC_API size_t GC_get_heap_size GC_PROTO((void)); - -/* Return the number of bytes allocated since the last collection. */ -GC_API size_t GC_get_bytes_since_gc GC_PROTO((void)); - -/* Enable incremental/generational collection. */ -/* Not advisable unless dirty bits are */ -/* available or most heap objects are */ -/* pointerfree(atomic) or immutable. */ -/* Don't use in leak finding mode. */ -/* Ignored if GC_dont_gc is true. */ -GC_API void GC_enable_incremental GC_PROTO((void)); - -/* Perform some garbage collection work, if appropriate. */ -/* Return 0 if there is no more work to be done. */ -/* Typically performs an amount of work corresponding roughly */ -/* to marking from one page. May do more work if further */ -/* progress requires it, e.g. if incremental collection is */ -/* disabled. It is reasonable to call this in a wait loop */ -/* until it returns 0. */ -GC_API int GC_collect_a_little GC_PROTO((void)); - -/* Allocate an object of size lb bytes. The client guarantees that */ -/* as long as the object is live, it will be referenced by a pointer */ -/* that points to somewhere within the first 256 bytes of the object. */ -/* (This should normally be declared volatile to prevent the compiler */ -/* from invalidating this assertion.) This routine is only useful */ -/* if a large array is being allocated. It reduces the chance of */ -/* accidentally retaining such an array as a result of scanning an */ -/* integer that happens to be an address inside the array. (Actually, */ -/* it reduces the chance of the allocator not finding space for such */ -/* an array, since it will try hard to avoid introducing such a false */ -/* reference.) On a SunOS 4.X or MS Windows system this is recommended */ -/* for arrays likely to be larger than 100K or so. For other systems, */ -/* or if the collector is not configured to recognize all interior */ -/* pointers, the threshold is normally much higher. */ -GC_API GC_PTR GC_malloc_ignore_off_page GC_PROTO((size_t lb)); -GC_API GC_PTR GC_malloc_atomic_ignore_off_page GC_PROTO((size_t lb)); - -#if defined(__sgi) && !defined(__GNUC__) && _COMPILER_VERSION >= 720 -# define GC_ADD_CALLER -# define GC_RETURN_ADDR (GC_word)__return_address -#endif - -#ifdef GC_ADD_CALLER -# define GC_EXTRAS GC_RETURN_ADDR, __FILE__, __LINE__ -# define GC_EXTRA_PARAMS GC_word ra, char * descr_string, int descr_int -#else -# define GC_EXTRAS __FILE__, __LINE__ -# define GC_EXTRA_PARAMS char * descr_string, int descr_int -#endif - -/* Debugging (annotated) allocation. GC_gcollect will check */ -/* objects allocated in this way for overwrites, etc. */ -GC_API GC_PTR GC_debug_malloc - GC_PROTO((size_t size_in_bytes, GC_EXTRA_PARAMS)); -GC_API GC_PTR GC_debug_malloc_atomic - GC_PROTO((size_t size_in_bytes, GC_EXTRA_PARAMS)); -GC_API GC_PTR GC_debug_malloc_uncollectable - GC_PROTO((size_t size_in_bytes, GC_EXTRA_PARAMS)); -GC_API GC_PTR GC_debug_malloc_stubborn - GC_PROTO((size_t size_in_bytes, GC_EXTRA_PARAMS)); -GC_API void GC_debug_free GC_PROTO((GC_PTR object_addr)); -GC_API GC_PTR GC_debug_realloc - GC_PROTO((GC_PTR old_object, size_t new_size_in_bytes, - GC_EXTRA_PARAMS)); - -GC_API void GC_debug_change_stubborn GC_PROTO((GC_PTR)); -GC_API void GC_debug_end_stubborn_change GC_PROTO((GC_PTR)); -# ifdef GC_DEBUG -# define GC_MALLOC(sz) GC_debug_malloc(sz, GC_EXTRAS) -# define GC_MALLOC_ATOMIC(sz) GC_debug_malloc_atomic(sz, GC_EXTRAS) -# define GC_MALLOC_UNCOLLECTABLE(sz) GC_debug_malloc_uncollectable(sz, \ - GC_EXTRAS) -# define GC_REALLOC(old, sz) GC_debug_realloc(old, sz, GC_EXTRAS) -# define GC_FREE(p) GC_debug_free(p) -# define GC_REGISTER_FINALIZER(p, f, d, of, od) \ - GC_debug_register_finalizer(p, f, d, of, od) -# define GC_REGISTER_FINALIZER_IGNORE_SELF(p, f, d, of, od) \ - GC_debug_register_finalizer_ignore_self(p, f, d, of, od) -# define GC_MALLOC_STUBBORN(sz) GC_debug_malloc_stubborn(sz, GC_EXTRAS); -# define GC_CHANGE_STUBBORN(p) GC_debug_change_stubborn(p) -# define GC_END_STUBBORN_CHANGE(p) GC_debug_end_stubborn_change(p) -# define GC_GENERAL_REGISTER_DISAPPEARING_LINK(link, obj) \ - GC_general_register_disappearing_link(link, GC_base(obj)) -# define GC_REGISTER_DISPLACEMENT(n) GC_debug_register_displacement(n) -# else -# define GC_MALLOC(sz) GC_malloc(sz) -# define GC_MALLOC_ATOMIC(sz) GC_malloc_atomic(sz) -# define GC_MALLOC_UNCOLLECTABLE(sz) GC_malloc_uncollectable(sz) -# define GC_REALLOC(old, sz) GC_realloc(old, sz) -# define GC_FREE(p) GC_free(p) -# define GC_REGISTER_FINALIZER(p, f, d, of, od) \ - GC_register_finalizer(p, f, d, of, od) -# define GC_REGISTER_FINALIZER_IGNORE_SELF(p, f, d, of, od) \ - GC_register_finalizer_ignore_self(p, f, d, of, od) -# define GC_MALLOC_STUBBORN(sz) GC_malloc_stubborn(sz) -# define GC_CHANGE_STUBBORN(p) GC_change_stubborn(p) -# define GC_END_STUBBORN_CHANGE(p) GC_end_stubborn_change(p) -# define GC_GENERAL_REGISTER_DISAPPEARING_LINK(link, obj) \ - GC_general_register_disappearing_link(link, obj) -# define GC_REGISTER_DISPLACEMENT(n) GC_register_displacement(n) -# endif -/* The following are included because they are often convenient, and */ -/* reduce the chance for a misspecifed size argument. But calls may */ -/* expand to something syntactically incorrect if t is a complicated */ -/* type expression. */ -# define GC_NEW(t) (t *)GC_MALLOC(sizeof (t)) -# define GC_NEW_ATOMIC(t) (t *)GC_MALLOC_ATOMIC(sizeof (t)) -# define GC_NEW_STUBBORN(t) (t *)GC_MALLOC_STUBBORN(sizeof (t)) -# define GC_NEW_UNCOLLECTABLE(t) (t *)GC_MALLOC_UNCOLLECTABLE(sizeof (t)) - -/* Finalization. Some of these primitives are grossly unsafe. */ -/* The idea is to make them both cheap, and sufficient to build */ -/* a safer layer, closer to PCedar finalization. */ -/* The interface represents my conclusions from a long discussion */ -/* with Alan Demers, Dan Greene, Carl Hauser, Barry Hayes, */ -/* Christian Jacobi, and Russ Atkinson. It's not perfect, and */ -/* probably nobody else agrees with it. Hans-J. Boehm 3/13/92 */ -typedef void (*GC_finalization_proc) - GC_PROTO((GC_PTR obj, GC_PTR client_data)); - -GC_API void GC_register_finalizer - GC_PROTO((GC_PTR obj, GC_finalization_proc fn, GC_PTR cd, - GC_finalization_proc *ofn, GC_PTR *ocd)); -GC_API void GC_debug_register_finalizer - GC_PROTO((GC_PTR obj, GC_finalization_proc fn, GC_PTR cd, - GC_finalization_proc *ofn, GC_PTR *ocd)); - /* When obj is no longer accessible, invoke */ - /* (*fn)(obj, cd). If a and b are inaccessible, and */ - /* a points to b (after disappearing links have been */ - /* made to disappear), then only a will be */ - /* finalized. (If this does not create any new */ - /* pointers to b, then b will be finalized after the */ - /* next collection.) Any finalizable object that */ - /* is reachable from itself by following one or more */ - /* pointers will not be finalized (or collected). */ - /* Thus cycles involving finalizable objects should */ - /* be avoided, or broken by disappearing links. */ - /* All but the last finalizer registered for an object */ - /* is ignored. */ - /* Finalization may be removed by passing 0 as fn. */ - /* Finalizers are implicitly unregistered just before */ - /* they are invoked. */ - /* The old finalizer and client data are stored in */ - /* *ofn and *ocd. */ - /* Fn is never invoked on an accessible object, */ - /* provided hidden pointers are converted to real */ - /* pointers only if the allocation lock is held, and */ - /* such conversions are not performed by finalization */ - /* routines. */ - /* If GC_register_finalizer is aborted as a result of */ - /* a signal, the object may be left with no */ - /* finalization, even if neither the old nor new */ - /* finalizer were NULL. */ - /* Obj should be the nonNULL starting address of an */ - /* object allocated by GC_malloc or friends. */ - /* Note that any garbage collectable object referenced */ - /* by cd will be considered accessible until the */ - /* finalizer is invoked. */ - -/* Another versions of the above follow. It ignores */ -/* self-cycles, i.e. pointers from a finalizable object to */ -/* itself. There is a stylistic argument that this is wrong, */ -/* but it's unavoidable for C++, since the compiler may */ -/* silently introduce these. It's also benign in that specific */ -/* case. */ -GC_API void GC_register_finalizer_ignore_self - GC_PROTO((GC_PTR obj, GC_finalization_proc fn, GC_PTR cd, - GC_finalization_proc *ofn, GC_PTR *ocd)); -GC_API void GC_debug_register_finalizer_ignore_self - GC_PROTO((GC_PTR obj, GC_finalization_proc fn, GC_PTR cd, - GC_finalization_proc *ofn, GC_PTR *ocd)); - -/* The following routine may be used to break cycles between */ -/* finalizable objects, thus causing cyclic finalizable */ -/* objects to be finalized in the correct order. Standard */ -/* use involves calling GC_register_disappearing_link(&p), */ -/* where p is a pointer that is not followed by finalization */ -/* code, and should not be considered in determining */ -/* finalization order. */ -GC_API int GC_register_disappearing_link GC_PROTO((GC_PTR * /* link */)); - /* Link should point to a field of a heap allocated */ - /* object obj. *link will be cleared when obj is */ - /* found to be inaccessible. This happens BEFORE any */ - /* finalization code is invoked, and BEFORE any */ - /* decisions about finalization order are made. */ - /* This is useful in telling the finalizer that */ - /* some pointers are not essential for proper */ - /* finalization. This may avoid finalization cycles. */ - /* Note that obj may be resurrected by another */ - /* finalizer, and thus the clearing of *link may */ - /* be visible to non-finalization code. */ - /* There's an argument that an arbitrary action should */ - /* be allowed here, instead of just clearing a pointer. */ - /* But this causes problems if that action alters, or */ - /* examines connectivity. */ - /* Returns 1 if link was already registered, 0 */ - /* otherwise. */ - /* Only exists for backward compatibility. See below: */ - -GC_API int GC_general_register_disappearing_link - GC_PROTO((GC_PTR * /* link */, GC_PTR obj)); - /* A slight generalization of the above. *link is */ - /* cleared when obj first becomes inaccessible. This */ - /* can be used to implement weak pointers easily and */ - /* safely. Typically link will point to a location */ - /* holding a disguised pointer to obj. (A pointer */ - /* inside an "atomic" object is effectively */ - /* disguised.) In this way soft */ - /* pointers are broken before any object */ - /* reachable from them are finalized. Each link */ - /* May be registered only once, i.e. with one obj */ - /* value. This was added after a long email discussion */ - /* with John Ellis. */ - /* Obj must be a pointer to the first word of an object */ - /* we allocated. It is unsafe to explicitly deallocate */ - /* the object containing link. Explicitly deallocating */ - /* obj may or may not cause link to eventually be */ - /* cleared. */ -GC_API int GC_unregister_disappearing_link GC_PROTO((GC_PTR * /* link */)); - /* Returns 0 if link was not actually registered. */ - /* Undoes a registration by either of the above two */ - /* routines. */ - -/* Auxiliary fns to make finalization work correctly with displaced */ -/* pointers introduced by the debugging allocators. */ -GC_API GC_PTR GC_make_closure GC_PROTO((GC_finalization_proc fn, GC_PTR data)); -GC_API void GC_debug_invoke_finalizer GC_PROTO((GC_PTR obj, GC_PTR data)); - -GC_API int GC_invoke_finalizers GC_PROTO((void)); - /* Run finalizers for all objects that are ready to */ - /* be finalized. Return the number of finalizers */ - /* that were run. Normally this is also called */ - /* implicitly during some allocations. If */ - /* GC-finalize_on_demand is nonzero, it must be called */ - /* explicitly. */ - -/* GC_set_warn_proc can be used to redirect or filter warning messages. */ -/* p may not be a NULL pointer. */ -typedef void (*GC_warn_proc) GC_PROTO((char *msg, GC_word arg)); -GC_API GC_warn_proc GC_set_warn_proc GC_PROTO((GC_warn_proc p)); - /* Returns old warning procedure. */ - -/* The following is intended to be used by a higher level */ -/* (e.g. cedar-like) finalization facility. It is expected */ -/* that finalization code will arrange for hidden pointers to */ -/* disappear. Otherwise objects can be accessed after they */ -/* have been collected. */ -/* Note that putting pointers in atomic objects or in */ -/* nonpointer slots of "typed" objects is equivalent to */ -/* disguising them in this way, and may have other advantages. */ -# if defined(I_HIDE_POINTERS) || defined(GC_I_HIDE_POINTERS) - typedef GC_word GC_hidden_pointer; -# define HIDE_POINTER(p) (~(GC_hidden_pointer)(p)) -# define REVEAL_POINTER(p) ((GC_PTR)(HIDE_POINTER(p))) - /* Converting a hidden pointer to a real pointer requires verifying */ - /* that the object still exists. This involves acquiring the */ - /* allocator lock to avoid a race with the collector. */ -# endif /* I_HIDE_POINTERS */ - -typedef GC_PTR (*GC_fn_type) GC_PROTO((GC_PTR client_data)); -GC_API GC_PTR GC_call_with_alloc_lock - GC_PROTO((GC_fn_type fn, GC_PTR client_data)); - -/* Check that p and q point to the same object. */ -/* Fail conspicuously if they don't. */ -/* Returns the first argument. */ -/* Succeeds if neither p nor q points to the heap. */ -/* May succeed if both p and q point to between heap objects. */ -GC_API GC_PTR GC_same_obj GC_PROTO((GC_PTR p, GC_PTR q)); - -/* Checked pointer pre- and post- increment operations. Note that */ -/* the second argument is in units of bytes, not multiples of the */ -/* object size. This should either be invoked from a macro, or the */ -/* call should be automatically generated. */ -GC_API GC_PTR GC_pre_incr GC_PROTO((GC_PTR *p, size_t how_much)); -GC_API GC_PTR GC_post_incr GC_PROTO((GC_PTR *p, size_t how_much)); - -/* Check that p is visible */ -/* to the collector as a possibly pointer containing location. */ -/* If it isn't fail conspicuously. */ -/* Returns the argument in all cases. May erroneously succeed */ -/* in hard cases. (This is intended for debugging use with */ -/* untyped allocations. The idea is that it should be possible, though */ -/* slow, to add such a call to all indirect pointer stores.) */ -/* Currently useless for multithreaded worlds. */ -GC_API GC_PTR GC_is_visible GC_PROTO((GC_PTR p)); - -/* Check that if p is a pointer to a heap page, then it points to */ -/* a valid displacement within a heap object. */ -/* Fail conspicuously if this property does not hold. */ -/* Uninteresting with ALL_INTERIOR_POINTERS. */ -/* Always returns its argument. */ -GC_API GC_PTR GC_is_valid_displacement GC_PROTO((GC_PTR p)); - -/* Safer, but slow, pointer addition. Probably useful mainly with */ -/* a preprocessor. Useful only for heap pointers. */ -#ifdef GC_DEBUG -# define GC_PTR_ADD3(x, n, type_of_result) \ - ((type_of_result)GC_same_obj((x)+(n), (x))) -# define GC_PRE_INCR3(x, n, type_of_result) \ - ((type_of_result)GC_pre_incr(&(x), (n)*sizeof(*x)) -# define GC_POST_INCR2(x, type_of_result) \ - ((type_of_result)GC_post_incr(&(x), sizeof(*x)) -# ifdef __GNUC__ -# define GC_PTR_ADD(x, n) \ - GC_PTR_ADD3(x, n, typeof(x)) -# define GC_PRE_INCR(x, n) \ - GC_PRE_INCR3(x, n, typeof(x)) -# define GC_POST_INCR(x, n) \ - GC_POST_INCR3(x, typeof(x)) -# else - /* We can't do this right without typeof, which ANSI */ - /* decided was not sufficiently useful. Repeatedly */ - /* mentioning the arguments seems too dangerous to be */ - /* useful. So does not casting the result. */ -# define GC_PTR_ADD(x, n) ((x)+(n)) -# endif -#else /* !GC_DEBUG */ -# define GC_PTR_ADD3(x, n, type_of_result) ((x)+(n)) -# define GC_PTR_ADD(x, n) ((x)+(n)) -# define GC_PRE_INCR3(x, n, type_of_result) ((x) += (n)) -# define GC_PRE_INCR(x, n) ((x) += (n)) -# define GC_POST_INCR2(x, n, type_of_result) ((x)++) -# define GC_POST_INCR(x, n) ((x)++) -#endif - -/* Safer assignment of a pointer to a nonstack location. */ -#ifdef GC_DEBUG -# ifdef __STDC__ -# define GC_PTR_STORE(p, q) \ - (*(void **)GC_is_visible(p) = GC_is_valid_displacement(q)) -# else -# define GC_PTR_STORE(p, q) \ - (*(char **)GC_is_visible(p) = GC_is_valid_displacement(q)) -# endif -#else /* !GC_DEBUG */ -# define GC_PTR_STORE(p, q) *((p) = (q)) -#endif - -/* Fynctions called to report pointer checking errors */ -GC_API void (*GC_same_obj_print_proc) GC_PROTO((GC_PTR p, GC_PTR q)); - -GC_API void (*GC_is_valid_displacement_print_proc) - GC_PROTO((GC_PTR p)); - -GC_API void (*GC_is_visible_print_proc) - GC_PROTO((GC_PTR p)); - -#if defined(_SOLARIS_PTHREADS) && !defined(SOLARIS_THREADS) -# define SOLARIS_THREADS -#endif - -#ifdef SOLARIS_THREADS -/* We need to intercept calls to many of the threads primitives, so */ -/* that we can locate thread stacks and stop the world. */ -/* Note also that the collector cannot see thread specific data. */ -/* Thread specific data should generally consist of pointers to */ -/* uncollectable objects, which are deallocated using the destructor */ -/* facility in thr_keycreate. */ -# include <thread.h> -# include <signal.h> - int GC_thr_create(void *stack_base, size_t stack_size, - void *(*start_routine)(void *), void *arg, long flags, - thread_t *new_thread); - int GC_thr_join(thread_t wait_for, thread_t *departed, void **status); - int GC_thr_suspend(thread_t target_thread); - int GC_thr_continue(thread_t target_thread); - void * GC_dlopen(const char *path, int mode); - -# ifdef _SOLARIS_PTHREADS -# include <pthread.h> - extern int GC_pthread_create(pthread_t *new_thread, - const pthread_attr_t *attr, - void * (*thread_execp)(void *), void *arg); - extern int GC_pthread_join(pthread_t wait_for, void **status); - -# undef thread_t - -# define pthread_join GC_pthread_join -# define pthread_create GC_pthread_create -#endif - -# define thr_create GC_thr_create -# define thr_join GC_thr_join -# define thr_suspend GC_thr_suspend -# define thr_continue GC_thr_continue -# define dlopen GC_dlopen - -# endif /* SOLARIS_THREADS */ - - -#if defined(IRIX_THREADS) || defined(LINUX_THREADS) -/* We treat these similarly. */ -# include <pthread.h> -# include <signal.h> - - int GC_pthread_create(pthread_t *new_thread, - const pthread_attr_t *attr, - void *(*start_routine)(void *), void *arg); - int GC_pthread_sigmask(int how, const sigset_t *set, sigset_t *oset); - int GC_pthread_join(pthread_t thread, void **retval); - -# define pthread_create GC_pthread_create -# define pthread_sigmask GC_pthread_sigmask -# define pthread_join GC_pthread_join - -#endif /* IRIX_THREADS || LINUX_THREADS */ - -# if defined(PCR) || defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || \ - defined(IRIX_THREADS) || defined(LINUX_THREADS) || \ - defined(IRIX_JDK_THREADS) - /* Any flavor of threads except SRC_M3. */ -/* This returns a list of objects, linked through their first */ -/* word. Its use can greatly reduce lock contention problems, since */ -/* the allocation lock can be acquired and released many fewer times. */ -/* lb must be large enough to hold the pointer field. */ -GC_PTR GC_malloc_many(size_t lb); -#define GC_NEXT(p) (*(GC_PTR *)(p)) /* Retrieve the next element */ - /* in returned list. */ -extern void GC_thr_init(); /* Needed for Solaris/X86 */ - -#endif /* THREADS && !SRC_M3 */ - -/* - * If you are planning on putting - * the collector in a SunOS 5 dynamic library, you need to call GC_INIT() - * from the statically loaded program section. - * This circumvents a Solaris 2.X (X<=4) linker bug. - */ -#if defined(sparc) || defined(__sparc) -# define GC_INIT() { extern end, etext; \ - GC_noop(&end, &etext); } -#else -# if defined(__CYGWIN32__) && defined(GC_USE_DLL) - /* - * Similarly gnu-win32 DLLs need explicit initialization - */ -# define GC_INIT() { GC_add_roots(DATASTART, DATAEND); } -# else -# define GC_INIT() -# endif -#endif - -#if (defined(_MSDOS) || defined(_MSC_VER)) && (_M_IX86 >= 300) \ - || defined(_WIN32) - /* win32S may not free all resources on process exit. */ - /* This explicitly deallocates the heap. */ - GC_API void GC_win32_free_heap (); -#endif - -#ifdef __cplusplus - } /* end of extern "C" */ -#endif - -#endif /* _GC_H */ diff --git a/gc/cord/private/cord_pos.h b/gc/cord/private/cord_pos.h deleted file mode 100644 index d2b24bb..0000000 --- a/gc/cord/private/cord_pos.h +++ /dev/null @@ -1,118 +0,0 @@ -/* - * Copyright (c) 1993-1994 by Xerox Corporation. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ -/* Boehm, May 19, 1994 2:23 pm PDT */ -# ifndef CORD_POSITION_H - -/* The representation of CORD_position. This is private to the */ -/* implementation, but the size is known to clients. Also */ -/* the implementation of some exported macros relies on it. */ -/* Don't use anything defined here and not in cord.h. */ - -# define MAX_DEPTH 48 - /* The maximum depth of a balanced cord + 1. */ - /* We don't let cords get deeper than MAX_DEPTH. */ - -struct CORD_pe { - CORD pe_cord; - size_t pe_start_pos; -}; - -/* A structure describing an entry on the path from the root */ -/* to current position. */ -typedef struct CORD_Pos { - size_t cur_pos; - int path_len; -# define CORD_POS_INVALID (0x55555555) - /* path_len == INVALID <==> position invalid */ - const char *cur_leaf; /* Current leaf, if it is a string. */ - /* If the current leaf is a function, */ - /* then this may point to function_buf */ - /* containing the next few characters. */ - /* Always points to a valid string */ - /* containing the current character */ - /* unless cur_end is 0. */ - size_t cur_start; /* Start position of cur_leaf */ - size_t cur_end; /* Ending position of cur_leaf */ - /* 0 if cur_leaf is invalid. */ - struct CORD_pe path[MAX_DEPTH + 1]; - /* path[path_len] is the leaf corresponding to cur_pos */ - /* path[0].pe_cord is the cord we point to. */ -# define FUNCTION_BUF_SZ 8 - char function_buf[FUNCTION_BUF_SZ]; /* Space for next few chars */ - /* from function node. */ -} CORD_pos[1]; - -/* Extract the cord from a position: */ -CORD CORD_pos_to_cord(CORD_pos p); - -/* Extract the current index from a position: */ -size_t CORD_pos_to_index(CORD_pos p); - -/* Fetch the character located at the given position: */ -char CORD_pos_fetch(CORD_pos p); - -/* Initialize the position to refer to the give cord and index. */ -/* Note that this is the most expensive function on positions: */ -void CORD_set_pos(CORD_pos p, CORD x, size_t i); - -/* Advance the position to the next character. */ -/* P must be initialized and valid. */ -/* Invalidates p if past end: */ -void CORD_next(CORD_pos p); - -/* Move the position to the preceding character. */ -/* P must be initialized and valid. */ -/* Invalidates p if past beginning: */ -void CORD_prev(CORD_pos p); - -/* Is the position valid, i.e. inside the cord? */ -int CORD_pos_valid(CORD_pos p); - -char CORD__pos_fetch(CORD_pos); -void CORD__next(CORD_pos); -void CORD__prev(CORD_pos); - -#define CORD_pos_fetch(p) \ - (((p)[0].cur_end != 0)? \ - (p)[0].cur_leaf[(p)[0].cur_pos - (p)[0].cur_start] \ - : CORD__pos_fetch(p)) - -#define CORD_next(p) \ - (((p)[0].cur_pos + 1 < (p)[0].cur_end)? \ - (p)[0].cur_pos++ \ - : (CORD__next(p), 0)) - -#define CORD_prev(p) \ - (((p)[0].cur_end != 0 && (p)[0].cur_pos > (p)[0].cur_start)? \ - (p)[0].cur_pos-- \ - : (CORD__prev(p), 0)) - -#define CORD_pos_to_index(p) ((p)[0].cur_pos) - -#define CORD_pos_to_cord(p) ((p)[0].path[0].pe_cord) - -#define CORD_pos_valid(p) ((p)[0].path_len != CORD_POS_INVALID) - -/* Some grubby stuff for performance-critical friends: */ -#define CORD_pos_chars_left(p) ((long)((p)[0].cur_end) - (long)((p)[0].cur_pos)) - /* Number of characters in cache. <= 0 ==> none */ - -#define CORD_pos_advance(p,n) ((p)[0].cur_pos += (n) - 1, CORD_next(p)) - /* Advance position by n characters */ - /* 0 < n < CORD_pos_chars_left(p) */ - -#define CORD_pos_cur_char_addr(p) \ - (p)[0].cur_leaf + ((p)[0].cur_pos - (p)[0].cur_start) - /* address of current character in cache. */ - -#endif |