From 8c4d7f6bc1d365906724c92e4143fa021bf8a757 Mon Sep 17 00:00:00 2001 From: rpj Date: Wed, 14 Oct 1998 06:49:46 +0000 Subject: Wed Oct 14 21:09:24 1998 Ross Johnson * private.c (_pthread_new_thread): Increment _pthread_threads_count. (_pthread_delete_thread): Decrement _pthread_threads_count. Remove some comments. * exit.c (_pthread_exit): : Fix two pthread_mutex_lock() calls that should have been pthread_mutex_unlock() calls. (_pthread_vacuum): Remove call to _pthread_destructor_pop_all(). * create.c (pthread_create): Fix two pthread_mutex_lock() calls that should have been pthread_mutex_unlock() calls. * global.c (_pthread_tsd_mutex): Add mutex for TSD operations. * tsd.c (pthread_key_create): Add critical section. (pthread_setspecific): Ditto. (pthread_getspecific): Ditto. (pthread_key_delete): Ditto. * sync.c (pthread_join): Fix two pthread_mutex_lock() calls that should have been pthread_mutex_unlock() calls. --- private.c | 51 ++++++--------------------------------------------- 1 file changed, 6 insertions(+), 45 deletions(-) (limited to 'private.c') diff --git a/private.c b/private.c index e3fac58..9126aaa 100644 --- a/private.c +++ b/private.c @@ -73,46 +73,6 @@ Once taken from _pthread_virgins[], used and freed threads are only ever pushed back onto _pthread_reuse[]. - The code for choosing a new (pthread_t) thread from the pool of - free thread structs looks like: - - if (_pthread_reuse_top >= 0) - { - new_thread = _pthread_reuse[_pthread_reuse_top--]; - } - else - { - if (_pthread_virgin_next < PTHREAD_THREADS_MAX) - { - new_thread = _pthread_virgin[_pthread_virgin_next++]; - } - else - { - return EAGAIN; - } - } - - - The code to free a thread is: - - _pthread_reuse[++_pthread_reuse_top] = thread; - - - We still need a means for pthread_self() to return its own thread - ID. - - We use the Win32 Thread Local Storage mechanism. A single call to - TlsAlloc() will make available a single 32 bit location to every - thread in the process, including those created after the call is - made. - - Provided we don't need to call pthread_self() after the Win32 - thread has terminated we can use the DLL entry point routine to - initialise TLS for each thread. Or we can use pthread_once() in - pthread_create() to do it. - - We can use either option. We'll use the DLL entry point routine. - */ int @@ -150,6 +110,7 @@ _pthread_new_thread(pthread_t * thread) new_thread->forkchildstack = NULL; *thread = new_thread; + _pthread_threads_count++; return 0; } @@ -170,10 +131,10 @@ _pthread_delete_thread(_pthread_t * thread) thread->ptstatus = _PTHREAD_REUSE; _pthread_reuse[++_pthread_reuse_top] = thread; + _pthread_threads_count--; + + return 0; } - else - { - return EINVAL; - } - return 0; + + return EINVAL; } -- cgit v1.2.3