Z3 sources

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

lib/debug.cpp

@@ -0,0 +1,107 @@
+/*++
+Copyright (c) 2006 Microsoft Corporation
+
+Module Name:
+
+    debug.cpp
+
+Abstract:
+
+    Basic debugging support.
+
+Author:
+
+    Leonardo de Moura (leonardo) 2006-09-11.
+
+Revision History:
+
+--*/
+#include<cstdio>
+#include<iostream>
+#include"str_hashtable.h"
+
+volatile bool g_enable_assertions = true;
+
+void enable_assertions(bool f) {
+    g_enable_assertions = f;
+}
+
+bool assertions_enabled() {
+    return g_enable_assertions;
+}
+
+void notify_assertion_violation(const char * fileName, int line, const char * condition) {
+    std::cerr << "ASSERTION VIOLATION\n";
+    std::cerr << "File: " << fileName << "\n";
+    std::cerr << "Line: " << line << "\n";
+    std::cerr << condition << "\n";
+}
+
+str_hashtable* g_enabled_debug_tags = 0;
+
+static void init_debug_table() {
+    if (!g_enabled_debug_tags) {
+        g_enabled_debug_tags = alloc(str_hashtable);
+    }
+}
+
+void finalize_debug() {
+    dealloc(g_enabled_debug_tags);
+    g_enabled_debug_tags = 0;
+}
+
+void enable_debug(const char * tag) {
+    init_debug_table();
+    g_enabled_debug_tags->insert(const_cast<char *>(tag));
+}
+
+void disable_debug(const char * tag) {
+    init_debug_table();
+    g_enabled_debug_tags->erase(const_cast<char *>(tag));
+}
+
+bool is_debug_enabled(const char * tag) {
+    init_debug_table();
+    return g_enabled_debug_tags->contains(const_cast<char *>(tag));
+}
+
+#ifndef _WINDOWS
+void invoke_gdb() {
+    char buffer[1024];
+    int * x = 0;
+    for (;;) {
+        std::cerr << "(C)ontinue, (A)bort, (S)top, Invoke (G)DB\n";
+        char result;
+        std::cin >> result;
+        switch(result) {
+        case 'C':
+        case 'c':
+            return;
+        case 'A':
+        case 'a':
+            exit(1);
+        case 'S':
+        case 's':
+            // force seg fault...
+            *x = 0;
+            return;
+        case 'G':
+        case 'g':
+            sprintf(buffer, "gdb -nw /proc/%d/exe %d", getpid(), getpid());
+            std::cerr << "invoking GDB...\n";
+            if (system(buffer) == 0) {
+                std::cerr << "continuing the execution...\n";
+            }
+            else {
+                std::cerr << "error starting GDB...\n";
+                // forcing seg fault.
+                int * x = 0;
+                *x = 0;
+            }
+            return;
+        default:
+            std::cerr << "INVALID COMMAND\n";
+        }
+    }
+}
+#endif