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/** |
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* This file is part of the CernVM File System. |
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*/ |
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#ifndef CVMFS_UTIL_TESTING_H_ |
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#define CVMFS_UTIL_TESTING_H_ |
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#include <cstdlib> |
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#ifdef CVMFS_NAMESPACE_GUARD |
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namespace CVMFS_NAMESPACE_GUARD { |
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#endif |
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#ifdef DEBUGMSG |
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// Let an external program pause cvmfs if |
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// - program runs in debug mode |
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// - the given environment variable is defined _and_ |
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// - points to an existing file |
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// - whose content is stop/start |
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void CVMFS_TEST_INJECT_BARRIER(const char *env) { |
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char *value = getenv(env); |
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if (value == NULL) |
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return; |
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int fd = open(value, O_RDONLY); |
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if (fd < 0) |
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return; |
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std::string action; |
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bool retval = SafeReadToString(fd, &action); |
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close(fd); |
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if (!retval) |
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return; |
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action = Trim(action, true /* trim_newline */); |
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if (action != "pause") |
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return; |
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Prng prng; |
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prng.InitLocaltime(); |
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while (true) { |
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int fd = open(value, O_RDONLY); |
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if (fd < 0) |
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return; |
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retval = SafeReadToString(fd, &action); |
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close(fd); |
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action = Trim(action, true /* trim_newline */); |
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if (action == "resume") |
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break; |
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if (action == "resume one") { |
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SafeWriteToFile("pause", value, 0644); |
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break; |
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} |
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SafeSleepMs(prng.Next(1000)); |
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} |
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} |
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#else |
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#define CVMFS_TEST_INJECT_BARRIER(...) ((void)0) |
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#endif |
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#ifdef CVMFS_NAMESPACE_GUARD |
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} // namespace CVMFS_NAMESPACE_GUARD |
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#endif |
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#endif // CVMFS_UTIL_TESTING_H_ |
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