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reduce contention #2842

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-01-06 20:10:11 -08:00
parent 670e8f8d67
commit f70696d8e7
3 changed files with 4 additions and 3 deletions
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2
scripts/update_api.py
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@ -1691,7 +1691,7 @@ def write_log_h_preamble(log_h):
log_h.write('#include<atomic>\n')
log_h.write('extern std::ostream * g_z3_log;\n')
log_h.write('extern std::atomic<bool> g_z3_log_enabled;\n')
log_h.write('class z3_log_ctx { bool m_prev; public: z3_log_ctx() { m_prev = g_z3_log_enabled.exchange(false); } ~z3_log_ctx() { g_z3_log_enabled = m_prev; } bool enabled() const { return m_prev; } };\n')
log_h.write('class z3_log_ctx { bool m_prev; public: z3_log_ctx() { m_prev = g_z3_log && g_z3_log_enabled.exchange(false); } ~z3_log_ctx() { if (g_z3_log) g_z3_log_enabled = m_prev; } bool enabled() const { return m_prev; } };\n')
log_h.write('inline void SetR(void * obj) { *g_z3_log << "= " << obj << "\\n"; }\ninline void SetO(void * obj, unsigned pos) { *g_z3_log << "* " << obj << " " << pos << "\\n"; } \ninline void SetAO(void * obj, unsigned pos, unsigned idx) { *g_z3_log << "@ " << obj << " " << pos << " " << idx << "\\n"; }\n')
log_h.write('#define RETURN_Z3(Z3RES) if (_LOG_CTX.enabled()) { SetR(Z3RES); } return Z3RES\n')
log_h.write('void _Z3_append_log(char const * msg);\n')

2
src/api/api_log.cpp
View file

@ -35,8 +35,8 @@ static std::mutex g_log_mux;
extern "C" {
void Z3_close_log_unsafe(void) {
if (g_z3_log != nullptr) {
dealloc(g_z3_log);
g_z3_log_enabled = false;
dealloc(g_z3_log);
g_z3_log = nullptr;
}
}

3
src/ast/rewriter/th_rewriter.cpp
View file

@ -107,7 +107,8 @@ struct th_rewriter_cfg : public default_rewriter_cfg {
bool cache_all_results() const { return m_cache_all; }
bool max_steps_exceeded(unsigned num_steps) const {
if (memory::get_allocation_size() > m_max_memory)
if (m_max_memory != SIZE_MAX &&
memory::get_allocation_size() > m_max_memory)
throw rewriter_exception(Z3_MAX_MEMORY_MSG);
return num_steps > m_max_steps;
}