Added libs/minisat (copy of minisat git master)

1 files changed, 72 insertions, 0 deletions

diff --git a/libs/minisat/System.h b/libs/minisat/System.h
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+/****************************************************************************************[System.h]
+Copyright (c) 2003-2006, Niklas Een, Niklas Sorensson
+Copyright (c) 2007-2010, Niklas Sorensson
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+associated documentation files (the "Software"), to deal in the Software without restriction,
+including without limitation the rights to use, copy, modify, merge, publish, distribute,
+sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
+NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
+OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+**************************************************************************************************/
+
+#ifndef Minisat_System_h
+#define Minisat_System_h
+
+#if defined(__linux__)
+#include <fpu_control.h>
+#endif
+
+#include "libs/minisat/IntTypes.h"
+
+//-------------------------------------------------------------------------------------------------
+
+namespace Minisat {
+
+static inline double cpuTime(void); // CPU-time in seconds.
+
+extern double memUsed();            // Memory in mega bytes (returns 0 for unsupported architectures).
+extern double memUsedPeak(bool strictlyPeak = false); // Peak-memory in mega bytes (returns 0 for unsupported architectures).
+
+extern void   setX86FPUPrecision(); // Make sure double's are represented with the same precision
+                                    // in memory and registers.
+
+extern void   limitMemory(uint64_t max_mem_mb); // Set a limit on total memory usage. The exact
+                                                // semantics varies depending on architecture.
+
+extern void   limitTime(uint32_t max_cpu_time); // Set a limit on maximum CPU time. The exact
+                                                // semantics varies depending on architecture.
+
+extern void   sigTerm(void handler(int));      // Set up handling of available termination signals.
+
+}
+
+//-------------------------------------------------------------------------------------------------
+// Implementation of inline functions:
+
+#if defined(_MSC_VER) || defined(__MINGW32__)
+#include <time.h>
+
+static inline double Minisat::cpuTime(void) { return (double)clock() / CLOCKS_PER_SEC; }
+
+#else
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <unistd.h>
+
+static inline double Minisat::cpuTime(void) {
+    struct rusage ru;
+    getrusage(RUSAGE_SELF, &ru);
+    return (double)ru.ru_utime.tv_sec + (double)ru.ru_utime.tv_usec / 1000000; }
+
+#endif
+
+#endif