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| author | deischen <deischen@FreeBSD.org> | 1999-12-28 18:12:07 +0000 |
|---|---|---|
| committer | deischen <deischen@FreeBSD.org> | 1999-12-28 18:12:07 +0000 |
| commit | 9321f383a24bce8e6555df4e36441e9bfcff4a27 (patch) | |
| tree | e0b9cc982b20ee21e845e703f20fa492e2abb29c /lib/libpthread/thread/thr_init.c | |
| parent | 2a6c7913a06dc521fa0fdb7e0fcc2a1ccd24800e (diff) | |
| download | FreeBSD-src-9321f383a24bce8e6555df4e36441e9bfcff4a27.zip FreeBSD-src-9321f383a24bce8e6555df4e36441e9bfcff4a27.tar.gz | |
Change stack allocation algorithm to make better use of memory
(it was leaving an unused block). Also protect the global stack
pointer from context changes while fiddling with it.
Diffstat (limited to 'lib/libpthread/thread/thr_init.c')
| -rw-r--r-- | lib/libpthread/thread/thr_init.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/lib/libpthread/thread/thr_init.c b/lib/libpthread/thread/thr_init.c index bab7e5b..c888697 100644 --- a/lib/libpthread/thread/thr_init.c +++ b/lib/libpthread/thread/thr_init.c @@ -187,13 +187,11 @@ _thread_init(void) SLIST_INIT(&_stackq); /* Create the red zone for the main stack. */ - if (mmap((void *) USRSTACK - - PTHREAD_STACK_INITIAL, - PTHREAD_STACK_GUARD, 0, MAP_ANON, - -1, 0) == MAP_FAILED) { + if (mmap((void *) USRSTACK - PTHREAD_STACK_INITIAL - + PTHREAD_STACK_GUARD, PTHREAD_STACK_GUARD, 0, MAP_ANON, + -1, 0) == MAP_FAILED) PANIC("Cannot allocate red zone for initial thread"); - } - + /* * Write a magic value to the thread structure * to help identify valid ones: @@ -248,7 +246,7 @@ _thread_init(void) /* Get the signal handler details: */ else if (_thread_sys_sigaction(i, NULL, - &_thread_sigact[i - 1]) != 0) { + &_thread_sigact[i - 1]) != 0) { /* * Abort this process if signal * initialisation fails: |
