| Directory: | cvmfs/ |
|---|---|
| File: | cvmfs/util/concurrency.cc |
| Date: | 2025-02-09 02:34:19 |
| Exec | Total | Coverage | |
|---|---|---|---|
| Lines: | 34 | 36 | 94.4% |
| Branches: | 11 | 20 | 55.0% |
| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /** | ||
| 2 | * This file is part of the CernVM File System. | ||
| 3 | */ | ||
| 4 | |||
| 5 | |||
| 6 | #include "util/concurrency.h" | ||
| 7 | |||
| 8 | #include <unistd.h> | ||
| 9 | |||
| 10 | #include <cassert> | ||
| 11 | |||
| 12 | #include "util/logging.h" | ||
| 13 | |||
| 14 | #ifdef CVMFS_NAMESPACE_GUARD | ||
| 15 | namespace CVMFS_NAMESPACE_GUARD { | ||
| 16 | #endif | ||
| 17 | |||
| 18 | 44 | unsigned int GetNumberOfCpuCores() { | |
| 19 | 44 | const int numCPU = sysconf(_SC_NPROCESSORS_ONLN); | |
| 20 | |||
| 21 |
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44 | if (numCPU <= 0) { |
| 22 | ✗ | LogCvmfs(kLogSpooler, kLogWarning, "Unable to determine the available " | |
| 23 | "number of processors in the system... " | ||
| 24 | "falling back to default '%d'", | ||
| 25 | kFallbackNumberOfCpus); | ||
| 26 | ✗ | return kFallbackNumberOfCpus; | |
| 27 | } | ||
| 28 | |||
| 29 | 44 | return static_cast<unsigned int>(numCPU); | |
| 30 | } | ||
| 31 | |||
| 32 | 3031 | Signal::Signal() : fired_(false) { | |
| 33 | 3031 | int retval = pthread_mutex_init(&lock_, NULL); | |
| 34 |
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3031 | assert(retval == 0); |
| 35 | 3031 | retval = pthread_cond_init(&signal_, NULL); | |
| 36 |
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3031 | assert(retval == 0); |
| 37 | 3031 | } | |
| 38 | |||
| 39 | |||
| 40 | 3030 | Signal::~Signal() { | |
| 41 |
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3030 | assert(IsSleeping()); |
| 42 | 3030 | int res = pthread_cond_destroy(&signal_); | |
| 43 |
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3031 | assert(0 == res); |
| 44 | 3031 | res = pthread_mutex_destroy(&lock_); | |
| 45 |
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3029 | assert(0 == res); |
| 46 | 3029 | } | |
| 47 | |||
| 48 | |||
| 49 | 3045 | void Signal::Wait() { | |
| 50 | 3045 | MutexLockGuard guard(lock_); | |
| 51 |
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6071 | while (!fired_) { |
| 52 |
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3027 | int retval = pthread_cond_wait(&signal_, &lock_); |
| 53 |
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3026 | assert(retval == 0); |
| 54 | } | ||
| 55 | 3044 | fired_ = false; | |
| 56 | 3044 | } | |
| 57 | |||
| 58 | |||
| 59 | 3045 | void Signal::Wakeup() { | |
| 60 | 3045 | MutexLockGuard guard(lock_); | |
| 61 | 3045 | fired_ = true; | |
| 62 | 3045 | int retval = pthread_cond_broadcast(&signal_); | |
| 63 |
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3045 | assert(retval == 0); |
| 64 | 3045 | } | |
| 65 | |||
| 66 | 3039 | bool Signal::IsSleeping() { | |
| 67 | 3039 | MutexLockGuard guard(lock_); | |
| 68 | 6080 | return fired_ == false; | |
| 69 | 3040 | } | |
| 70 | |||
| 71 | #ifdef CVMFS_NAMESPACE_GUARD | ||
| 72 | } // namespace CVMFS_NAMESPACE_GUARD | ||
| 73 | #endif | ||
| 74 |