pstrace: initial commit

framework/mutex.h

@@ -0,0 +1,40 @@
+#ifndef MUTEX_H_
+#define MUTEX_H_
+
+#include <pthread.h>
+#include <sys/time.h>
+
+class SC_Mutex {
+public:
+    SC_Mutex() {
+        pthread_mutex_init(&m, NULL);
+    }
+    SC_Mutex(SC_Mutex const&) {
+        pthread_mutex_init(&m, NULL);
+    }
+    SC_Mutex& operator=(SC_Mutex const& rhs) {
+        if (&rhs != this) {
+            pthread_mutex_init(&m, NULL);
+        }
+        return *this;
+    }
+    ~SC_Mutex() {
+        pthread_mutex_destroy(&m);
+    }
+
+    void Lock() {
+        pthread_mutex_lock(&m);
+    }
+
+    void Unlock() {
+        pthread_mutex_unlock(&m);
+    }
+
+    bool Trylock() {
+        return (pthread_mutex_trylock(&m) == 0);
+    }
+private:
+    pthread_mutex_t m;
+};
+
+#endif /* MUTEX_H_ */