From 730e129a800f2406ff7b879931c433438b69c6cd Mon Sep 17 00:00:00 2001
From: ptitSeb <sebastien.chev@gmail.com>
Date: Mon, 14 Jun 2021 14:53:20 +0200
Subject: Change the way locked mutex are detected (taken from box86)

---
 src/box64context.c     | 3 +--
 src/custommem.c        | 3 +--
 src/include/threads.h  | 4 ++--
 src/libtools/threads.c | 9 +++------
 4 files changed, 7 insertions(+), 12 deletions(-)

(limited to 'src')

diff --git a/src/box64context.c b/src/box64context.c
index 0202dba1..c3b228e6 100755
--- a/src/box64context.c
+++ b/src/box64context.c
@@ -73,9 +73,8 @@ int unlockMutex()
     int ret = unlockCustommemMutex();
     int i;
     #define GO(A, B)                    \
-        i = checkMutex(&A);             \
+        i = checkUnlockMutex(&A);       \
         if(i) {                         \
-            pthread_mutex_unlock(&A);   \
             ret|=(1<<B);                \
         }
 
diff --git a/src/custommem.c b/src/custommem.c
index 8bc25ac0..bfedc35a 100644
--- a/src/custommem.c
+++ b/src/custommem.c
@@ -898,9 +898,8 @@ int unlockCustommemMutex()
     int ret = 0;
     int i = 0;
     #define GO(A, B)                    \
-        i = checkMutex(&A);             \
+        i = checkUnlockMutex(&A);       \
         if(i) {                         \
-            pthread_mutex_unlock(&A);   \
             ret|=(1<<B);                \
         }
     GO(mutex_blocks, 0)
diff --git a/src/include/threads.h b/src/include/threads.h
index 19d3c9bc..847d4ee6 100755
--- a/src/include/threads.h
+++ b/src/include/threads.h
@@ -20,7 +20,7 @@ void fini_pthread_helper(box64context_t* context);
 // prepare an "emuthread structure" in pet and return address of function pointer for a "thread creation routine"
 void* my_prepare_thread(x64emu_t *emu, void* f, void* arg, int ssize, void** pet);
 
-//check if a mutex is locked by current thread (works only for PTHREAD_MUTEX_ERRORCHECK typed mutex)
-int checkMutex(void* m);
+//check and unlock if a mutex is locked by current thread (works only for PTHREAD_MUTEX_ERRORCHECK typed mutex)
+int checkUnlockMutex(void* m);
 
 #endif //_THREADS_H_
\ No newline at end of file
diff --git a/src/libtools/threads.c b/src/libtools/threads.c
index 83de0da9..93219381 100755
--- a/src/libtools/threads.c
+++ b/src/libtools/threads.c
@@ -1103,15 +1103,12 @@ void fini_pthread_helper(box64context_t* context)
 	}
 }
 
-int checkMutex(void* m)
+int checkUnlockMutex(void* m)
 {
 	pthread_mutex_t* mutex = (pthread_mutex_t*)m;
-	int ret = pthread_mutex_trylock(mutex);
+	int ret = pthread_mutex_unlock(mutex);
 	if(ret==0) {
-		pthread_mutex_unlock(mutex);
-		return 0;
-	}
-	if(ret==EDEADLK)
 		return 1;
+	}
 	return 0;
 }
-- 
cgit 1.4.1