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Diffstat (limited to 'boehm-gc/README.linux')
| -rw-r--r-- | boehm-gc/README.linux | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/boehm-gc/README.linux b/boehm-gc/README.linux deleted file mode 100644 index ffe735bc182..00000000000 --- a/boehm-gc/README.linux +++ /dev/null @@ -1,39 +0,0 @@ -See README.alpha for Linux on DEC AXP info. This file applies to -Linux/Intel. - -Incremental GC is supported. - -Dynamic libraries are supported on an ELF system. A static executable -should be linked with the gcc option "-Wl,-defsym,_DYNAMIC=0". - -The collector appears to work with Linux threads. We have seen -intermittent hangs in sem_wait. So far we have been unable to reproduce -these unless the process was being debugged or traced. Thus it's -possible that the only real issue is that the debugger loses -signals on rare occasions. - -The garbage collector uses SIGPWR and SIGXCPU if it is used with -Linux threads. These should not be touched by the client program. - -To use threads, you need to abide by the following requirements: - -1) You need to use LinuxThreads (which are included in libc6). - - The collector relies on some implementation details of the LinuxThreads - package. It is unlikely that this code will work on other - pthread implementations (in particular it will *not* work with - MIT pthreads). - -2) You must compile the collector with -DLINUX_THREADS and -D_REENTRANT - specified in the Makefile. - -3) Every file that makes thread calls should define LINUX_THREADS and - _REENTRANT 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) Currently dlopen() is probably not safe. The collector must traverse - the list of libraries maintained by the runtime loader. That can - probably be an inconsistent state when a thread calling the loader is - is stopped for GC. (It's possible that this is fixable in the - same way it is handled for SOLARIS_THREADS, with GC_dlopen.) |