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Added optional synchronization for multi-thread API logs. Relates to #798.

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This commit is contained in:
Christoph M. Wintersteiger 2016-11-22 11:32:25 +00:00
parent 03f8b871a1
commit dee7c29b19
2 changed files with 63 additions and 26 deletions
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73
src/api/api_log.cpp
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@ -26,32 +26,61 @@ std::ostream * g_z3_log = 0;
bool g_z3_log_enabled = false;
extern "C" {
Z3_bool Z3_API Z3_open_log(Z3_string filename) {
if (g_z3_log != 0)
Z3_close_log();
g_z3_log = alloc(std::ofstream, filename);
g_z3_log_enabled = true;
if (g_z3_log->bad() || g_z3_log->fail()) {
dealloc(g_z3_log);
g_z3_log = 0;
return Z3_FALSE;
}
*g_z3_log << "V \"" << Z3_MAJOR_VERSION << "." << Z3_MINOR_VERSION << "." << Z3_BUILD_NUMBER << "." << Z3_REVISION_NUMBER << " " << __DATE__ << "\"\n";
g_z3_log->flush();
return Z3_TRUE;
}
void Z3_API Z3_append_log(Z3_string str) {
if (g_z3_log == 0)
return;
_Z3_append_log(static_cast<char const *>(str));
}
void Z3_API Z3_close_log(void) {
void Z3_close_log_unsafe(void) {
if (g_z3_log != 0) {
dealloc(g_z3_log);
g_z3_log_enabled = false;
g_z3_log = 0;
}
}
Z3_bool Z3_API Z3_open_log(Z3_string filename) {
#ifdef Z3_LOG_SYNC
#pragma omp critical (z3_log)
{
#endif
if (g_z3_log != 0)
Z3_close_log_unsafe();
g_z3_log = alloc(std::ofstream, filename);
if (g_z3_log->bad() || g_z3_log->fail()) {
dealloc(g_z3_log);
g_z3_log = 0;
return Z3_FALSE;
}
*g_z3_log << "V \"" << Z3_MAJOR_VERSION << "." << Z3_MINOR_VERSION << "." << Z3_BUILD_NUMBER << "." << Z3_REVISION_NUMBER << " " << __DATE__ << "\"\n";
g_z3_log->flush();
g_z3_log_enabled = true;
#ifdef Z3_LOG_SYNC
}
#endif
return Z3_TRUE;
}
void Z3_API Z3_append_log(Z3_string str) {
if (g_z3_log == 0)
return;
#ifdef Z3_LOG_SYNC
#pragma omp critical (z3_log)
{
#endif
if (g_z3_log == 0)
return;
_Z3_append_log(static_cast<char const *>(str));
#ifdef Z3_LOG_SYNC
}
#endif
}
void Z3_API Z3_close_log(void) {
if (g_z3_log != 0) {
#ifdef Z3_LOG_SYNC
#pragma omp critical (z3_log)
{
#endif
Z3_close_log_unsafe();
#ifdef Z3_LOG_SYNC
}
#endif
}
}
}