Tentative: User defined mutex

user-mutex.c

@@ -0,0 +1,27 @@
+#include <wolfssl/wolfcrypt/wc_port.h>
+
+    int wc_InitMutex(wolfSSL_Mutex* m)
+    {
+        (void)m;
+        return 0;
+    }
+
+    int wc_FreeMutex(wolfSSL_Mutex *m)
+    {
+        (void)m;
+        return 0;
+    }
+
+
+    int wc_LockMutex(wolfSSL_Mutex *m)
+    {
+        (void)m;
+        return 0;
+    }
+
+
+    int wc_UnLockMutex(wolfSSL_Mutex *m)
+    {
+        (void)m;
+        return 0;
+    }

user_settings.h

@@ -0,0 +1,2 @@
+
+typedef int wolfSSL_Mutex;

wolfcrypt/src/wc_port.c

@@ -647,7 +647,7 @@ int z_fs_close(XFILE file)
 
 #endif /* !NO_FILESYSTEM && !WOLFSSL_ZEPHYR */
 
-
+#if !defined(WOLFSSL_USER_MUTEX) 
 wolfSSL_Mutex* wc_InitAndAllocMutex(void)
 {
     wolfSSL_Mutex* m = (wolfSSL_Mutex*) XMALLOC(sizeof(wolfSSL_Mutex), NULL,
@@ -665,6 +665,7 @@ wolfSSL_Mutex* wc_InitAndAllocMutex(void)
 
     return m;
 }
+#endif
 
 #ifdef USE_WOLF_STRTOK
 /* String token (delim) search. If str is null use nextp. */
@@ -1845,6 +1846,10 @@ int wolfSSL_CryptHwMutexUnLock(void) {
         return 0;
     }
 
+#elif defined(WOLFSSL_USER_MUTEX)
+
+    /* Use user own mutex */
+
 #else
     #warning No mutex handling defined
 

wolfssl/wolfcrypt/wc_port.h

@@ -156,9 +156,11 @@
 
 #else
     #ifndef SINGLE_THREADED
+        #ifndef  WOLFSSL_USER_MUTEX
             #define WOLFSSL_PTHREADS
             #include <pthread.h>
         #endif
+    #endif
     #if (defined(OPENSSL_EXTRA) || defined(GOAHEAD_WS)) && \
         !defined(NO_FILESYSTEM)
         #include <unistd.h>      /* for close of BIO */
@@ -238,6 +240,8 @@
         typedef struct k_mutex wolfSSL_Mutex;
     #elif defined(WOLFSSL_TELIT_M2MB)
         typedef M2MB_OS_MTX_HANDLE wolfSSL_Mutex;
+    #elif defined(WOLFSSL_USER_MUTEX)
+        /* typedef User_Mutex wolfSSL_Mutex; */
     #else
         #error Need a mutex type in multithreaded mode
     #endif /* USE_WINDOWS_API */