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Remove the global lock around thread stack creation. 

This lock has been here since the original commits, but as far as I can tell
it never served any purpose. We've never had a free list of cached stacks or
anything like that.

Change-Id: I9d665c7eaa9c699ce0659ffb111402a0239fe1f5
This commit is contained in:
Elliott Hughes 2014-07-10 10:25:26 -07:00
parent cd23370ca7
commit e959a3b315
1 changed files with 0 additions and 4 deletions
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4
libc/bionic/pthread_create.cpp
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@ -47,8 +47,6 @@
extern "C" __LIBC_HIDDEN__ void __init_user_desc(struct user_desc*, int, void*);
#endif
static pthread_mutex_t g_pthread_stack_creation_lock = PTHREAD_MUTEX_INITIALIZER;
extern "C" int __isthreaded;
// This code is used both by each new pthread and the code that initializes the main thread.
@ -104,8 +102,6 @@ int __init_thread(pthread_internal_t* thread, bool add_to_thread_list) {
}
static void* __create_thread_stack(pthread_internal_t* thread) {
ScopedPthreadMutexLocker lock(&g_pthread_stack_creation_lock);
// Create a new private anonymous map.
int prot = PROT_READ | PROT_WRITE;
int flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;