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Revert "[compiler-rt] Add a critical section when flushing gcov counters" 

This reverts commit 88f5bf77f9 as it broke
green dragon bots.

http://lab.llvm.org:8080/green/job/clang-stage1-RA/4401/
This commit is contained in:
Akira Hatanaka 2019-12-09 19:57:26 -08:00
parent 9574757dba
commit 78a7af456d
1 changed files with 1 additions and 24 deletions
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25
compiler-rt/lib/profile/GCDAProfiling.c
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@ -62,27 +62,8 @@ typedef unsigned long long uint64_t;
#include "InstrProfiling.h"
#include "InstrProfilingUtil.h"
#ifndef _WIN32
#include <pthread.h>
pthread_mutex_t gcov_flush_mutex = PTHREAD_MUTEX_INITIALIZER;
static __inline void gcov_flush_lock() {
pthread_mutex_lock(&gcov_flush_mutex);
}
static __inline void gcov_flush_unlock() {
pthread_mutex_unlock(&gcov_flush_mutex);
}
#else
#include <windows.h>
static SRWLOCK gcov_flush_mutex = SRWLOCK_INIT;
static __inline void gcov_flush_lock() {
AcquireSRWLockExclusive(&gcov_flush_mutex);
}
static __inline void gcov_flush_unlock() {
ReleaseSRWLockExclusive(&gcov_flush_mutex);
}
#endif
/* #define DEBUG_GCDAPROFILING */
/*
* --- GCOV file format I/O primitives ---
*/
@ -639,16 +620,12 @@ void llvm_register_flush_function(fn_ptr fn) {
}
void __gcov_flush() {
gcov_flush_lock();
struct fn_node* curr = flush_fn_list.head;
while (curr) {
curr->fn();
curr = curr->next;
}
gcov_flush_unlock();
}
COMPILER_RT_VISIBILITY