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Diffstat (limited to 'gc/doc/README.sgi')
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diff --git a/gc/doc/README.sgi b/gc/doc/README.sgi deleted file mode 100644 index 7bdb50a..0000000 --- a/gc/doc/README.sgi +++ /dev/null @@ -1,41 +0,0 @@ -Performance of the incremental collector can be greatly enhanced with --DNO_EXECUTE_PERMISSION. - -The collector should run with all of the -32, -n32 and -64 ABIs. Remember to -define the AS macro in the Makefile to be "as -64", or "as -n32". - -If you use -DREDIRECT_MALLOC=GC_malloc with C++ code, your code should make -at least one explicit call to malloc instead of new to ensure that the proper -version of malloc is linked in. - -Sproc threads are not supported in this version, though there may exist other -ports. - -Pthreads support is provided. This requires that: - -1) You compile the collector with -DGC_IRIX_THREADS specified in the Makefile. - -2) You have the latest pthreads patches installed. - -(Though the collector makes only documented pthread calls, -it relies on signal/threads interactions working just right in ways -that are not required by the standard. It is unlikely that this code -will run on other pthreads platforms. But please tell me if it does.) - -3) Every file that makes thread calls should define IRIX_THREADS and then -include gc.h. Gc.h redefines some of the pthread primitives as macros which -also provide the collector with information it requires. - -4) pthread_cond_wait and pthread_cond_timed_wait should be prepared for -premature wakeups. (I believe the pthreads and realted standards require this -anyway. Irix pthreads often terminate a wait if a signal arrives. -The garbage collector uses signals to stop threads.) - -5) It is expensive to stop a thread waiting in IO at the time the request is -initiated. Applications with many such threads may not exhibit acceptable -performance with the collector. (Increasing the heap size may help.) - -6) The collector should not be compiled with -DREDIRECT_MALLOC. This -confuses some library calls made by the pthreads implementation, which -expect the standard malloc. - |