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Update libraries and make it build on windows.

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Still gets some warnings because compilers have changed. But should work.
This commit is contained in:
Sandu Liviu Catalin
2025-06-25 22:34:23 +03:00
parent 520a5eacc5
commit f2b7499f85
3038 changed files with 251668 additions and 273857 deletions
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1
vendor/ConcurrentQueue/LICENSE.md vendored
View File

@@ -1,6 +1,7 @@
This license file applies to everything in this repository except that which
is explicitly annotated as being written by other authors, i.e. the Boost
queue (included in the benchmarks for comparison), Intel's TBB library (ditto),
dlib::pipe (ditto),
the CDSChecker tool (used for verification), the Relacy model checker (ditto),
and Jeff Preshing's semaphore implementation (used in the blocking queue) which
has a zlib license (embedded in lightweightsempahore.h).

2
vendor/ConcurrentQueue/include/blockingconcurrentqueue.h vendored
View File

@@ -544,7 +544,7 @@ public:
// Returns true if the underlying atomic variables used by
// the queue are lock-free (they should be on most platforms).
// Thread-safe.
static bool is_lock_free()
static constexpr bool is_lock_free()
{
return ConcurrentQueue::is_lock_free();
}

165
vendor/ConcurrentQueue/include/concurrentqueue.h vendored
View File

@@ -31,7 +31,7 @@
#pragma once
#if defined(__GNUC__)
#if defined(__GNUC__) && !defined(__INTEL_COMPILER)
// Disable -Wconversion warnings (spuriously triggered when Traits::size_t and
// Traits::index_t are set to < 32 bits, causing integer promotion, causing warnings
// upon assigning any computed values)
@@ -77,6 +77,7 @@
#include <climits> // for CHAR_BIT
#include <array>
#include <thread> // partly for __WINPTHREADS_VERSION if on MinGW-w64 w/ POSIX threading
#include <mutex> // used for thread exit synchronization
// Platform-specific definitions of a numeric thread ID type and an invalid value
namespace moodycamel { namespace details {
@@ -104,7 +105,7 @@ namespace moodycamel { namespace details {
static const thread_id_t invalid_thread_id2 = 0xFFFFFFFFU; // Not technically guaranteed to be invalid, but is never used in practice. Note that all Win32 thread IDs are presently multiples of 4.
static inline thread_id_t thread_id() { return static_cast<thread_id_t>(::GetCurrentThreadId()); }
} }
#elif defined(__arm__) || defined(_M_ARM) || defined(__aarch64__) || (defined(__APPLE__) && TARGET_OS_IPHONE)
#elif defined(__arm__) || defined(_M_ARM) || defined(__aarch64__) || (defined(__APPLE__) && TARGET_OS_IPHONE) || defined(__MVS__) || defined(MOODYCAMEL_NO_THREAD_LOCAL)
namespace moodycamel { namespace details {
static_assert(sizeof(std::thread::id) == 4 || sizeof(std::thread::id) == 8, "std::thread::id is expected to be either 4 or 8 bytes");
@@ -216,9 +217,9 @@ namespace moodycamel { namespace details {
// VS2013 doesn't support `thread_local`, and MinGW-w64 w/ POSIX threading has a crippling bug: http://sourceforge.net/p/mingw-w64/bugs/445
// g++ <=4.7 doesn't support thread_local either.
// Finally, iOS/ARM doesn't have support for it either, and g++/ARM allows it to compile but it's unconfirmed to actually work
#if (!defined(_MSC_VER) || _MSC_VER >= 1900) && (!defined(__MINGW32__) && !defined(__MINGW64__) || !defined(__WINPTHREADS_VERSION)) && (!defined(__GNUC__) || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) && (!defined(__APPLE__) || !TARGET_OS_IPHONE) && !defined(__arm__) && !defined(_M_ARM) && !defined(__aarch64__)
#if (!defined(_MSC_VER) || _MSC_VER >= 1900) && (!defined(__MINGW32__) && !defined(__MINGW64__) || !defined(__WINPTHREADS_VERSION)) && (!defined(__GNUC__) || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)) && (!defined(__APPLE__) || !TARGET_OS_IPHONE) && !defined(__arm__) && !defined(_M_ARM) && !defined(__aarch64__) && !defined(__MVS__)
// Assume `thread_local` is fully supported in all other C++11 compilers/platforms
//#define MOODYCAMEL_CPP11_THREAD_LOCAL_SUPPORTED // always disabled for now since several users report having problems with it on
#define MOODYCAMEL_CPP11_THREAD_LOCAL_SUPPORTED // tentatively enabled for now; years ago several users report having problems with it on
#endif
#endif
#endif
@@ -378,7 +379,14 @@ struct ConcurrentQueueDefaultTraits
// consumer threads exceeds the number of idle cores (in which case try 0-100).
// Only affects instances of the BlockingConcurrentQueue.
static const int MAX_SEMA_SPINS = 10000;
// Whether to recycle dynamically-allocated blocks into an internal free list or
// not. If false, only pre-allocated blocks (controlled by the constructor
// arguments) will be recycled, and all others will be `free`d back to the heap.
// Note that blocks consumed by explicit producers are only freed on destruction
// of the queue (not following destruction of the token) regardless of this trait.
static const bool RECYCLE_ALLOCATED_BLOCKS = false;
#ifndef MCDBGQ_USE_RELACY
// Memory allocation can be customized if needed.
@@ -468,15 +476,10 @@ namespace details
template<typename T>
static inline bool circular_less_than(T a, T b)
{
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4554)
#endif
static_assert(std::is_integral<T>::value && !std::numeric_limits<T>::is_signed, "circular_less_than is intended to be used only with unsigned integer types");
return static_cast<T>(a - b) > static_cast<T>(static_cast<T>(1) << static_cast<T>(sizeof(T) * CHAR_BIT - 1));
#ifdef _MSC_VER
#pragma warning(pop)
#endif
return static_cast<T>(a - b) > static_cast<T>(static_cast<T>(1) << (static_cast<T>(sizeof(T) * CHAR_BIT - 1)));
// Note: extra parens around rhs of operator<< is MSVC bug: https://developercommunity2.visualstudio.com/t/C4554-triggers-when-both-lhs-and-rhs-is/10034931
// silencing the bug requires #pragma warning(disable: 4554) around the calling code and has no effect when done here.
}
template<typename U>
@@ -506,9 +509,9 @@ namespace details
template<typename T>
static inline void swap_relaxed(std::atomic<T>& left, std::atomic<T>& right)
{
T temp = std::move(left.load(std::memory_order_relaxed));
left.store(std::move(right.load(std::memory_order_relaxed)), std::memory_order_relaxed);
right.store(std::move(temp), std::memory_order_relaxed);
T temp = left.load(std::memory_order_relaxed);
left.store(right.load(std::memory_order_relaxed), std::memory_order_relaxed);
right.store(temp, std::memory_order_relaxed);
}
template<typename T>
@@ -555,6 +558,8 @@ namespace details
typedef RelacyThreadExitListener ThreadExitListener;
typedef RelacyThreadExitNotifier ThreadExitNotifier;
#else
class ThreadExitNotifier;
struct ThreadExitListener
{
typedef void (*callback_t)(void*);
@@ -562,22 +567,29 @@ namespace details
void* userData;
ThreadExitListener* next; // reserved for use by the ThreadExitNotifier
ThreadExitNotifier* chain; // reserved for use by the ThreadExitNotifier
};
class ThreadExitNotifier
{
public:
static void subscribe(ThreadExitListener* listener)
{
auto& tlsInst = instance();
std::lock_guard<std::mutex> guard(mutex());
listener->next = tlsInst.tail;
listener->chain = &tlsInst;
tlsInst.tail = listener;
}
static void unsubscribe(ThreadExitListener* listener)
{
auto& tlsInst = instance();
std::lock_guard<std::mutex> guard(mutex());
if (!listener->chain) {
return; // race with ~ThreadExitNotifier
}
auto& tlsInst = *listener->chain;
listener->chain = nullptr;
ThreadExitListener** prev = &tlsInst.tail;
for (auto ptr = tlsInst.tail; ptr != nullptr; ptr = ptr->next) {
if (ptr == listener) {
@@ -597,7 +609,9 @@ namespace details
{
// This thread is about to exit, let everyone know!
assert(this == &instance() && "If this assert fails, you likely have a buggy compiler! Change the preprocessor conditions such that MOODYCAMEL_CPP11_THREAD_LOCAL_SUPPORTED is no longer defined.");
std::lock_guard<std::mutex> guard(mutex());
for (auto ptr = tail; ptr != nullptr; ptr = ptr->next) {
ptr->chain = nullptr;
ptr->callback(ptr->userData);
}
}
@@ -608,6 +622,13 @@ namespace details
static thread_local ThreadExitNotifier notifier;
return notifier;
}
static inline std::mutex& mutex()
{
// Must be static because the ThreadExitNotifier could be destroyed while unsubscribe is called
static std::mutex mutex;
return mutex;
}
private:
ThreadExitListener* tail;
@@ -789,7 +810,7 @@ public:
// queue is fully constructed before it starts being used by other threads (this
// includes making the memory effects of construction visible, possibly with a
// memory barrier).
explicit ConcurrentQueue(size_t capacity = 6 * BLOCK_SIZE)
explicit ConcurrentQueue(size_t capacity = 32 * BLOCK_SIZE)
: producerListTail(nullptr),
producerCount(0),
initialBlockPoolIndex(0),
@@ -1314,7 +1335,7 @@ public:
// Returns true if the underlying atomic variables used by
// the queue are lock-free (they should be on most platforms).
// Thread-safe.
static bool is_lock_free()
static constexpr bool is_lock_free()
{
return
details::static_is_lock_free<bool>::value == 2 &&
@@ -1458,7 +1479,7 @@ private:
while (head != nullptr) {
auto prevHead = head;
auto refs = head->freeListRefs.load(std::memory_order_relaxed);
if ((refs & REFS_MASK) == 0 || !head->freeListRefs.compare_exchange_strong(refs, refs + 1, std::memory_order_acquire, std::memory_order_relaxed)) {
if ((refs & REFS_MASK) == 0 || !head->freeListRefs.compare_exchange_strong(refs, refs + 1, std::memory_order_acquire)) {
head = freeListHead.load(std::memory_order_acquire);
continue;
}
@@ -1508,7 +1529,7 @@ private:
node->freeListRefs.store(1, std::memory_order_release);
if (!freeListHead.compare_exchange_strong(head, node, std::memory_order_release, std::memory_order_relaxed)) {
// Hmm, the add failed, but we can only try again when the refcount goes back to zero
if (node->freeListRefs.fetch_add(SHOULD_BE_ON_FREELIST - 1, std::memory_order_release) == 1) {
if (node->freeListRefs.fetch_add(SHOULD_BE_ON_FREELIST - 1, std::memory_order_acq_rel) == 1) {
continue;
}
}
@@ -1538,7 +1559,7 @@ private:
struct Block
{
Block()
: next(nullptr), elementsCompletelyDequeued(0), freeListRefs(0), freeListNext(nullptr), shouldBeOnFreeList(false), dynamicallyAllocated(true)
: next(nullptr), elementsCompletelyDequeued(0), freeListRefs(0), freeListNext(nullptr), dynamicallyAllocated(true)
{
#ifdef MCDBGQ_TRACKMEM
owner = nullptr;
@@ -1583,7 +1604,7 @@ private:
}
else {
// Increment counter
auto prevVal = elementsCompletelyDequeued.fetch_add(1, std::memory_order_release);
auto prevVal = elementsCompletelyDequeued.fetch_add(1, std::memory_order_acq_rel);
assert(prevVal < BLOCK_SIZE);
return prevVal == BLOCK_SIZE - 1;
}
@@ -1606,7 +1627,7 @@ private:
}
else {
// Increment counter
auto prevVal = elementsCompletelyDequeued.fetch_add(count, std::memory_order_release);
auto prevVal = elementsCompletelyDequeued.fetch_add(count, std::memory_order_acq_rel);
assert(prevVal + count <= BLOCK_SIZE);
return prevVal + count == BLOCK_SIZE;
}
@@ -1655,7 +1676,6 @@ private:
public:
std::atomic<std::uint32_t> freeListRefs;
std::atomic<Block*> freeListNext;
std::atomic<bool> shouldBeOnFreeList;
bool dynamicallyAllocated; // Perhaps a better name for this would be 'isNotPartOfInitialBlockPool'
#ifdef MCDBGQ_TRACKMEM
@@ -1810,12 +1830,7 @@ private:
auto block = this->tailBlock;
do {
auto nextBlock = block->next;
if (block->dynamicallyAllocated) {
destroy(block);
}
else {
this->parent->add_block_to_free_list(block);
}
this->parent->add_block_to_free_list(block);
block = nextBlock;
} while (block != this->tailBlock);
}
@@ -1998,7 +2013,7 @@ private:
// block size (in order to get a correct signed block count offset in all cases):
auto headBase = localBlockIndex->entries[localBlockIndexHead].base;
auto blockBaseIndex = index & ~static_cast<index_t>(BLOCK_SIZE - 1);
auto offset = static_cast<size_t>(static_cast<typename std::make_signed<index_t>::type>(blockBaseIndex - headBase) / BLOCK_SIZE);
auto offset = static_cast<size_t>(static_cast<typename std::make_signed<index_t>::type>(blockBaseIndex - headBase) / static_cast<typename std::make_signed<index_t>::type>(BLOCK_SIZE));
auto block = localBlockIndex->entries[(localBlockIndexHead + offset) & (localBlockIndex->size - 1)].block;
// Dequeue
@@ -2259,7 +2274,7 @@ private:
auto headBase = localBlockIndex->entries[localBlockIndexHead].base;
auto firstBlockBaseIndex = firstIndex & ~static_cast<index_t>(BLOCK_SIZE - 1);
auto offset = static_cast<size_t>(static_cast<typename std::make_signed<index_t>::type>(firstBlockBaseIndex - headBase) / BLOCK_SIZE);
auto offset = static_cast<size_t>(static_cast<typename std::make_signed<index_t>::type>(firstBlockBaseIndex - headBase) / static_cast<typename std::make_signed<index_t>::type>(BLOCK_SIZE));
auto indexIndex = (localBlockIndexHead + offset) & (localBlockIndex->size - 1);
// Iterate the blocks and dequeue
@@ -2906,13 +2921,15 @@ private:
else if (!new_block_index()) {
return false;
}
localBlockIndex = blockIndex.load(std::memory_order_relaxed);
newTail = (localBlockIndex->tail.load(std::memory_order_relaxed) + 1) & (localBlockIndex->capacity - 1);
idxEntry = localBlockIndex->index[newTail];
assert(idxEntry->key.load(std::memory_order_relaxed) == INVALID_BLOCK_BASE);
idxEntry->key.store(blockStartIndex, std::memory_order_relaxed);
localBlockIndex->tail.store(newTail, std::memory_order_release);
return true;
else {
localBlockIndex = blockIndex.load(std::memory_order_relaxed);
newTail = (localBlockIndex->tail.load(std::memory_order_relaxed) + 1) & (localBlockIndex->capacity - 1);
idxEntry = localBlockIndex->index[newTail];
assert(idxEntry->key.load(std::memory_order_relaxed) == INVALID_BLOCK_BASE);
idxEntry->key.store(blockStartIndex, std::memory_order_relaxed);
localBlockIndex->tail.store(newTail, std::memory_order_release);
return true;
}
}
inline void rewind_block_index_tail()
@@ -2940,7 +2957,7 @@ private:
assert(tailBase != INVALID_BLOCK_BASE);
// Note: Must use division instead of shift because the index may wrap around, causing a negative
// offset, whose negativity we want to preserve
auto offset = static_cast<size_t>(static_cast<typename std::make_signed<index_t>::type>(index - tailBase) / BLOCK_SIZE);
auto offset = static_cast<size_t>(static_cast<typename std::make_signed<index_t>::type>(index - tailBase) / static_cast<typename std::make_signed<index_t>::type>(BLOCK_SIZE));
size_t idx = (tail + offset) & (localBlockIndex->capacity - 1);
assert(localBlockIndex->index[idx]->key.load(std::memory_order_relaxed) == index && localBlockIndex->index[idx]->value.load(std::memory_order_relaxed) != nullptr);
return idx;
@@ -3052,7 +3069,12 @@ private:
#ifdef MCDBGQ_TRACKMEM
block->owner = nullptr;
#endif
freeList.add(block);
if (!Traits::RECYCLE_ALLOCATED_BLOCKS && block->dynamicallyAllocated) {
destroy(block);
}
else {
freeList.add(block);
}
}
inline void add_blocks_to_free_list(Block* block)
@@ -3203,12 +3225,6 @@ private:
//////////////////////////////////
ProducerBase* recycle_or_create_producer(bool isExplicit)
{
bool recycled;
return recycle_or_create_producer(isExplicit, recycled);
}
ProducerBase* recycle_or_create_producer(bool isExplicit, bool& recycled)
{
#ifdef MCDBGQ_NOLOCKFREE_IMPLICITPRODHASH
debug::DebugLock lock(implicitProdMutex);
@@ -3219,13 +3235,11 @@ private:
bool expected = true;
if (ptr->inactive.compare_exchange_strong(expected, /* desired */ false, std::memory_order_acquire, std::memory_order_relaxed)) {
// We caught one! It's been marked as activated, the caller can have it
recycled = true;
return ptr;
}
}
}
recycled = false;
return add_producer(isExplicit ? static_cast<ProducerBase*>(create<ExplicitProducer>(this)) : create<ImplicitProducer>(this));
}
@@ -3396,7 +3410,7 @@ private:
// Look for the id in this hash
auto index = hashedId;
while (true) { // Not an infinite loop because at least one slot is free in the hash table
index &= hash->capacity - 1;
index &= hash->capacity - 1u;
auto probedKey = hash->entries[index].key.load(std::memory_order_relaxed);
if (probedKey == id) {
@@ -3409,15 +3423,14 @@ private:
if (hash != mainHash) {
index = hashedId;
while (true) {
index &= mainHash->capacity - 1;
probedKey = mainHash->entries[index].key.load(std::memory_order_relaxed);
index &= mainHash->capacity - 1u;
auto empty = details::invalid_thread_id;
#ifdef MOODYCAMEL_CPP11_THREAD_LOCAL_SUPPORTED
auto reusable = details::invalid_thread_id2;
if ((probedKey == empty && mainHash->entries[index].key.compare_exchange_strong(empty, id, std::memory_order_relaxed, std::memory_order_relaxed)) ||
(probedKey == reusable && mainHash->entries[index].key.compare_exchange_strong(reusable, id, std::memory_order_acquire, std::memory_order_acquire))) {
if (mainHash->entries[index].key.compare_exchange_strong(empty, id, std::memory_order_seq_cst, std::memory_order_relaxed) ||
mainHash->entries[index].key.compare_exchange_strong(reusable, id, std::memory_order_seq_cst, std::memory_order_relaxed)) {
#else
if ((probedKey == empty && mainHash->entries[index].key.compare_exchange_strong(empty, id, std::memory_order_relaxed, std::memory_order_relaxed))) {
if (mainHash->entries[index].key.compare_exchange_strong(empty, id, std::memory_order_seq_cst, std::memory_order_relaxed)) {
#endif
mainHash->entries[index].value = value;
break;
@@ -3446,7 +3459,7 @@ private:
// locked block).
mainHash = implicitProducerHash.load(std::memory_order_acquire);
if (newCount >= (mainHash->capacity >> 1)) {
auto newCapacity = mainHash->capacity << 1;
size_t newCapacity = mainHash->capacity << 1;
while (newCount >= (newCapacity >> 1)) {
newCapacity <<= 1;
}
@@ -3479,15 +3492,11 @@ private:
// to finish being allocated by another thread (and if we just finished allocating above, the condition will
// always be true)
if (newCount < (mainHash->capacity >> 1) + (mainHash->capacity >> 2)) {
bool recycled;
auto producer = static_cast<ImplicitProducer*>(recycle_or_create_producer(false, recycled));
auto producer = static_cast<ImplicitProducer*>(recycle_or_create_producer(false));
if (producer == nullptr) {
implicitProducerHashCount.fetch_sub(1, std::memory_order_relaxed);
return nullptr;
}
if (recycled) {
implicitProducerHashCount.fetch_sub(1, std::memory_order_relaxed);
}
#ifdef MOODYCAMEL_CPP11_THREAD_LOCAL_SUPPORTED
producer->threadExitListener.callback = &ConcurrentQueue::implicit_producer_thread_exited_callback;
@@ -3497,17 +3506,17 @@ private:
auto index = hashedId;
while (true) {
index &= mainHash->capacity - 1;
auto probedKey = mainHash->entries[index].key.load(std::memory_order_relaxed);
index &= mainHash->capacity - 1u;
auto empty = details::invalid_thread_id;
#ifdef MOODYCAMEL_CPP11_THREAD_LOCAL_SUPPORTED
auto reusable = details::invalid_thread_id2;
if ((probedKey == empty && mainHash->entries[index].key.compare_exchange_strong(empty, id, std::memory_order_relaxed, std::memory_order_relaxed)) ||
(probedKey == reusable && mainHash->entries[index].key.compare_exchange_strong(reusable, id, std::memory_order_acquire, std::memory_order_acquire))) {
#else
if ((probedKey == empty && mainHash->entries[index].key.compare_exchange_strong(empty, id, std::memory_order_relaxed, std::memory_order_relaxed))) {
if (mainHash->entries[index].key.compare_exchange_strong(reusable, id, std::memory_order_seq_cst, std::memory_order_relaxed)) {
implicitProducerHashCount.fetch_sub(1, std::memory_order_relaxed); // already counted as a used slot
mainHash->entries[index].value = producer;
break;
}
#endif
if (mainHash->entries[index].key.compare_exchange_strong(empty, id, std::memory_order_seq_cst, std::memory_order_relaxed)) {
mainHash->entries[index].value = producer;
break;
}
@@ -3526,9 +3535,6 @@ private:
#ifdef MOODYCAMEL_CPP11_THREAD_LOCAL_SUPPORTED
void implicit_producer_thread_exited(ImplicitProducer* producer)
{
// Remove from thread exit listeners
details::ThreadExitNotifier::unsubscribe(&producer->threadExitListener);
// Remove from hash
#ifdef MCDBGQ_NOLOCKFREE_IMPLICITPRODHASH
debug::DebugLock lock(implicitProdMutex);
@@ -3544,10 +3550,9 @@ private:
for (; hash != nullptr; hash = hash->prev) {
auto index = hashedId;
do {
index &= hash->capacity - 1;
probedKey = hash->entries[index].key.load(std::memory_order_relaxed);
if (probedKey == id) {
hash->entries[index].key.store(details::invalid_thread_id2, std::memory_order_release);
index &= hash->capacity - 1u;
probedKey = id;
if (hash->entries[index].key.compare_exchange_strong(probedKey, details::invalid_thread_id2, std::memory_order_seq_cst, std::memory_order_relaxed)) {
break;
}
++index;
@@ -3737,6 +3742,6 @@ inline void swap(typename ConcurrentQueue<T, Traits>::ImplicitProducerKVP& a, ty
#pragma warning(pop)
#endif
#if defined(__GNUC__)
#if defined(__GNUC__) && !defined(__INTEL_COMPILER)
#pragma GCC diagnostic pop
#endif

20
vendor/ConcurrentQueue/include/lightweightsemaphore.h vendored
View File

@@ -24,8 +24,16 @@ extern "C" {
}
#elif defined(__MACH__)
#include <mach/mach.h>
#elif defined(__MVS__)
#include <zos-semaphore.h>
#elif defined(__unix__)
#include <semaphore.h>
#if defined(__GLIBC_PREREQ) && defined(_GNU_SOURCE)
#if __GLIBC_PREREQ(2,30)
#define MOODYCAMEL_LIGHTWEIGHTSEMAPHORE_MONOTONIC
#endif
#endif
#endif
namespace moodycamel
@@ -159,9 +167,9 @@ public:
}
}
};
#elif defined(__unix__)
#elif defined(__unix__) || defined(__MVS__)
//---------------------------------------------------------
// Semaphore (POSIX, Linux)
// Semaphore (POSIX, Linux, zOS)
//---------------------------------------------------------
class Semaphore
{
@@ -209,7 +217,11 @@ public:
struct timespec ts;
const int usecs_in_1_sec = 1000000;
const int nsecs_in_1_sec = 1000000000;
#ifdef MOODYCAMEL_LIGHTWEIGHTSEMAPHORE_MONOTONIC
clock_gettime(CLOCK_MONOTONIC, &ts);
#else
clock_gettime(CLOCK_REALTIME, &ts);
#endif
ts.tv_sec += (time_t)(usecs / usecs_in_1_sec);
ts.tv_nsec += (long)(usecs % usecs_in_1_sec) * 1000;
// sem_timedwait bombs if you have more than 1e9 in tv_nsec
@@ -221,7 +233,11 @@ public:
int rc;
do {
#ifdef MOODYCAMEL_LIGHTWEIGHTSEMAPHORE_MONOTONIC
rc = sem_clockwait(&m_sema, CLOCK_MONOTONIC, &ts);
#else
rc = sem_timedwait(&m_sema, &ts);
#endif
} while (rc == -1 && errno == EINTR);
return rc == 0;
}