From 85da7ee692072c643939e9f4b24fbd1e74e64e70 Mon Sep 17 00:00:00 2001 From: Akinori Ito Date: Thu, 15 Nov 2001 00:32:13 +0000 Subject: Update to w3m-0.2.1-inu-1.6. --- gc/doc/README.environment | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 gc/doc/README.environment (limited to 'gc/doc/README.environment') diff --git a/gc/doc/README.environment b/gc/doc/README.environment new file mode 100644 index 0000000..5760342 --- /dev/null +++ b/gc/doc/README.environment @@ -0,0 +1,44 @@ +The garbage collector looks at a number of environment variables which are +the used to affect its operation. These are examined only on Un*x-like +platforms. + +GC_INITIAL_HEAP_SIZE= - Initial heap size in bytes. May speed up + process start-up. + +GC_LOOP_ON_ABORT - Causes the collector abort routine to enter a tight loop. + This may make it easier to debug, such a process, especially + for multithreaded platforms that don't produce usable core + files, or if a core file would be too large. On some + platforms, this also causes SIGSEGV to be caught and + result in an infinite loop in a handler, allowing + similar debugging techniques. + +GC_PRINT_STATS - Turn on as much logging as is easily feasible without + adding signifcant runtime overhead. Doesn't work if + the collector is built with SMALL_CONFIG. Overridden + by setting GC_quiet. On by default if the collector + was built without -DSILENT. + +GC_PRINT_ADDRESS_MAP - Linux only. Dump /proc/self/maps, i.e. various address + maps for the process, to stderr on every GC. Useful for + mapping root addresses to source for deciphering leak + reports. + +GC_NPROCS= - Linux w/threads only. Explicitly sets the number of processors + that the GC should expect to use. Note that setting this to 1 + when multiple processors are available will preserve + correctness, but may lead to really horrible performance. + +GC_NO_BLACKLIST_WARNING - Prevents the collector from issuing + "Needed to allocate blacklisted block at ..." warnings. + +The following turn on runtime flags that are also program settable. Checked +only during initialization. We expect that they will usually be set through +other means, but this may help with debugging and testing: + +GC_FIND_LEAK - Turns on GC_find_leak and thus leak detection. + +GC_ALL_INTERIOR_POINTERS - Turns on GC_all_interior_pointers and thus interior + pointer recognition. + +GC_DONT_GC - Turns off garbage collection. Use cautiously. -- cgit v1.2.3