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27 * Trace writing functions.
30 #ifndef _TRACE_WRITER_LOCAL_HPP_
31 #define _TRACE_WRITER_LOCAL_HPP_
34 #include "os_thread.hpp"
35 #include "trace_writer.hpp"
40 extern const FunctionSig memcpy_sig;
41 extern const FunctionSig malloc_sig;
42 extern const FunctionSig free_sig;
43 extern const FunctionSig realloc_sig;
46 * A specialized Writer class, mean to trace the current process.
49 * - it creates a trace file based on the current process name
50 * - uses mutexes to allow tracing from multiple threades
51 * - flushes the output to ensure the last call is traced in event of
52 * abnormal termination
54 class LocalWriter : public Writer {
57 * We need a recursive mutex so that it doesn't dead lock when a segfault happens when the mutex is held.
59 os::recursive_mutex mutex;
64 * Should never called directly -- use localWriter singleton below instead.
71 unsigned beginEnter(const FunctionSig *sig);
74 void beginLeave(unsigned call);
83 extern LocalWriter localWriter;
85 } /* namespace trace */
87 #endif /* _TRACE_WRITER_LOCAL_HPP_ */