| Directory: | cvmfs/ |
|---|---|
| File: | cvmfs/util/concurrency.cc |
| Date: | 2025-08-31 02:39:21 |
| 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 <pthread.h> | ||
| 9 | #include <unistd.h> | ||
| 10 | |||
| 11 | #include <cassert> | ||
| 12 | #include <cstddef> | ||
| 13 | |||
| 14 | #include "util/logging.h" | ||
| 15 | #include "util/mutex.h" | ||
| 16 | |||
| 17 | #ifdef CVMFS_NAMESPACE_GUARD | ||
| 18 | namespace CVMFS_NAMESPACE_GUARD { | ||
| 19 | #endif | ||
| 20 | |||
| 21 | 965 | unsigned int GetNumberOfCpuCores() { | |
| 22 | 965 | const int numCPU = sysconf(_SC_NPROCESSORS_ONLN); | |
| 23 | |||
| 24 |
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965 | if (numCPU <= 0) { |
| 25 | ✗ | LogCvmfs(kLogSpooler, kLogWarning, | |
| 26 | "Unable to determine the available " | ||
| 27 | "number of processors in the system... " | ||
| 28 | "falling back to default '%d'", | ||
| 29 | kFallbackNumberOfCpus); | ||
| 30 | ✗ | return kFallbackNumberOfCpus; | |
| 31 | } | ||
| 32 | |||
| 33 | 965 | return static_cast<unsigned int>(numCPU); | |
| 34 | } | ||
| 35 | |||
| 36 | 51241 | Signal::Signal() : fired_(false) { | |
| 37 | 51241 | int retval = pthread_mutex_init(&lock_, NULL); | |
| 38 |
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51241 | assert(retval == 0); |
| 39 | 51241 | retval = pthread_cond_init(&signal_, NULL); | |
| 40 |
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51241 | assert(retval == 0); |
| 41 | 51241 | } | |
| 42 | |||
| 43 | |||
| 44 | 51237 | Signal::~Signal() { | |
| 45 |
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51237 | assert(IsSleeping()); |
| 46 | 51233 | int res = pthread_cond_destroy(&signal_); | |
| 47 |
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51237 | assert(0 == res); |
| 48 | 51237 | res = pthread_mutex_destroy(&lock_); | |
| 49 |
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51225 | assert(0 == res); |
| 50 | 51225 | } | |
| 51 | |||
| 52 | |||
| 53 | 51843 | void Signal::Wait() { | |
| 54 | 51843 | const MutexLockGuard guard(lock_); | |
| 55 |
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102955 | while (!fired_) { |
| 56 |
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51112 | const int retval = pthread_cond_wait(&signal_, &lock_); |
| 57 |
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51112 | assert(retval == 0); |
| 58 | } | ||
| 59 | 51843 | fired_ = false; | |
| 60 | 51843 | } | |
| 61 | |||
| 62 | |||
| 63 | 51843 | void Signal::Wakeup() { | |
| 64 | 51843 | const MutexLockGuard guard(lock_); | |
| 65 | 51843 | fired_ = true; | |
| 66 | 51843 | const int retval = pthread_cond_broadcast(&signal_); | |
| 67 |
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51843 | assert(retval == 0); |
| 68 | 51843 | } | |
| 69 | |||
| 70 | 51616 | bool Signal::IsSleeping() { | |
| 71 | 51616 | const MutexLockGuard guard(lock_); | |
| 72 | 103244 | return fired_ == false; | |
| 73 | 51624 | } | |
| 74 | |||
| 75 | #ifdef CVMFS_NAMESPACE_GUARD | ||
| 76 | } // namespace CVMFS_NAMESPACE_GUARD | ||
| 77 | #endif | ||
| 78 |