OSX/utilities/simulate_crash.m

   1 //
   2 //  simulate_crash
   3 //  utilities
   4 //
   5 //  Copyright (c) 2014 Apple Inc. All Rights Reserved.
   6 //
   7
   8 #include "debugging.h"
   9
  10 #import <mach/mach.h>
  11 #import <SoftLinking/SoftLinking.h>
  12 #import <Foundation/Foundation.h>
  13
  14 SOFT_LINK_FRAMEWORK_SAFE(PrivateFrameworks, CrashReporterSupport);
  15
  16 SOFT_LINK_FUNCTION(CrashReporterSupport, SimulateCrash, soft_SimulateCrash, \
  17                    BOOL, (pid_t pid, mach_exception_data_type_t exceptionCode, NSString *description),
  18                    (pid, exceptionCode, description));
  19 SOFT_LINK_FUNCTION(CrashReporterSupport, WriteStackshotReport, soft_WriteStackshotReport, \
  20                    BOOL, (NSString *reason, mach_exception_data_type_t exceptionCode),
  21                    (reason, exceptionCode));
  22
  23 static int __simulate_crash_counter = -1;
  24
  25 void __security_simulatecrash(CFStringRef reason, uint32_t code)
  26 {
  27     secerror("Simulating crash, reason: %@, code=%08x", reason, code);
  28     if (__security_simulatecrash_enabled() && isCrashReporterSupportAvailable()) {
  29         soft_SimulateCrash(getpid(), code, (__bridge NSString *)reason);
  30     } else {
  31         __simulate_crash_counter++;
  32     }
  33 }
  34
  35 void __security_stackshotreport(CFStringRef reason, uint32_t code)
  36 {
  37     secerror("stackshot report, reason: %@, code=%08x", reason, code);
  38     if (!__security_simulatecrash_enabled() && isCrashReporterSupportAvailable()) {
  39         return;
  40     }
  41     if (isCrashReporterSupportAvailable()) {
  42         soft_WriteStackshotReport((__bridge NSString *)reason, code);
  43     }
  44 }
  45
  46
  47 int __security_simulatecrash_enable(bool enable)
  48 {
  49     int count = __simulate_crash_counter;
  50     __simulate_crash_counter = enable ? -1 : 0;
  51     return count;
  52 }
  53
  54 bool __security_simulatecrash_enabled(void)
  55 {
  56     return __simulate_crash_counter == -1;
  57 }
  58