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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "threadlist.h"
#include <malloc.h>
namespace vespamalloc {
namespace {
const char * VESPA_MALLOC_MMAP_THRESHOLD = "VESPA_MALLOC_MMAP_THRESHOLD";
}
template <typename MemBlockPtrT, typename ThreadStatT>
ThreadListT<MemBlockPtrT, ThreadStatT>::ThreadListT(AllocPool & allocPool, MMapPool & mmapPool) :
_isThreaded(false),
_threadCount(0),
_threadCountAccum(0),
_allocPool(allocPool),
_mmapPool(mmapPool)
{
const char * mmapThresholdS = getenv(VESPA_MALLOC_MMAP_THRESHOLD);
int mmapThreshold = (mmapThresholdS != nullptr)
? strtol(mmapThresholdS, nullptr, 0)
: MMAP_LIMIT_DEFAULT;
for (size_t i = 0; i < getMaxNumThreads(); i++) {
auto & thread = _threadVector[i];
thread.setPool(_allocPool, _mmapPool);
thread.mallopt(M_MMAP_THRESHOLD, mmapThreshold);
}
}
template <typename MemBlockPtrT, typename ThreadStatT>
ThreadListT<MemBlockPtrT, ThreadStatT>::~ThreadListT() = default;
template <typename MemBlockPtrT, typename ThreadStatT>
void ThreadListT<MemBlockPtrT, ThreadStatT>::info(FILE * os, size_t level)
{
size_t peakThreads(0);
size_t activeThreads(0);
for (size_t i(0); i < getMaxNumThreads(); i++) {
const ThreadPool & thread = _threadVector[i];
if (thread.isActive()) {
activeThreads++;
peakThreads = i;
}
}
fprintf(os, "#%ld active threads. Peak threads #%ld. %u threads created in total.\n",
activeThreads, peakThreads, _threadCountAccum.load());
if ((level > 1) && ! ThreadStatT::isDummy()) {
for (SizeClassT sc(0); sc < NUM_SIZE_CLASSES; sc++) {
_allocPool.dataSegment().infoThread(os, level, 0, sc, _threadCountAccum.load() + 1);
}
}
for (size_t i(0); i < getMaxNumThreads(); i++) {
const ThreadPool & thread = _threadVector[i];
if (thread.isActive()) {
if ( ! ThreadStatT::isDummy()) {
if (thread.isUsed()) {
fprintf(os, "Thread #%u = pid # %d\n", thread.threadId(), thread.osThreadId());
thread.info(os, level, _allocPool.dataSegment());
}
}
}
}
}
template <typename MemBlockPtrT, typename ThreadStatT>
bool ThreadListT<MemBlockPtrT, ThreadStatT>::quitThisThread()
{
ThreadPool & tp = getCurrent();
tp.quit();
_threadCount.fetch_sub(1);
return true;
}
template <typename MemBlockPtrT, typename ThreadStatT>
bool ThreadListT<MemBlockPtrT, ThreadStatT>::initThisThread()
{
bool retval(true);
_threadCount.fetch_add(1);
uint32_t lidAccum = _threadCountAccum.fetch_add(1);
long localId(-1);
for(size_t i = 0; (localId < 0) && (i < getMaxNumThreads()); i++) {
ThreadPool & tp = _threadVector[i];
if (tp.grabAvailable()) {
localId = i;
}
}
ASSERT_STACKTRACE(localId >= 0);
ASSERT_STACKTRACE(size_t(localId) < getMaxNumThreads());
_myPool = &_threadVector[localId];
ASSERT_STACKTRACE(getThreadId() == size_t(localId));
ASSERT_STACKTRACE(lidAccum < 0xffffffffu);
getCurrent().init(lidAccum+1);
return retval;
}
}
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