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