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GPipelineManager.cpp
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163 lines (125 loc) · 3.89 KB
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/***************************
@Author: Chunel
@Contact: chunel@foxmail.com
@File: GPipelineManager.cpp
@Time: 2023/1/15 13:27
@Desc:
***************************/
#include <algorithm>
#include "GPipelineManager.h"
CGRAPH_NAMESPACE_BEGIN
CStatus GPipelineManager::init() {
CGRAPH_FUNCTION_BEGIN
if (!used_list_.empty()) {
// 初始化的时候，不应该有 used 的内容
CGRAPH_RETURN_ERROR_STATUS("used list status error")
}
for (auto pipeline : free_list_) {
status += pipeline->init();
}
CGRAPH_FUNCTION_CHECK_STATUS
is_init_ = true;
CGRAPH_FUNCTION_END
}
CStatus GPipelineManager::run() {
CGRAPH_FUNCTION_BEGIN
CGRAPH_ASSERT_INIT(true)
GPipelinePtr pipeline = fetch();
if (nullptr == pipeline) {
CGRAPH_RETURN_ERROR_STATUS("no free pipeline current")
}
/**
* 这里执行，是外部线程执行的。获取的status就是这个pipeline run的结果
* 无论如何，执行完成之后，都要将pipeline返回到 free_list 中去
*/
status = pipeline->run();
status += release(pipeline);
CGRAPH_FUNCTION_END
}
CStatus GPipelineManager::destroy() {
CGRAPH_FUNCTION_BEGIN
if (!used_list_.empty()) {
CGRAPH_RETURN_ERROR_STATUS("used list status error")
}
for (auto pipeline : free_list_) {
status += pipeline->destroy();
}
CGRAPH_FUNCTION_CHECK_STATUS
is_init_ = false;
CGRAPH_FUNCTION_END
}
CStatus GPipelineManager::add(GPipelinePtr ptr) {
CGRAPH_FUNCTION_BEGIN
CGRAPH_ASSERT_NOT_NULL(ptr)
CGRAPH_ASSERT_INIT(false)
free_list_.push_back(ptr);
CGRAPH_FUNCTION_END
}
CStatus GPipelineManager::clear() {
CGRAPH_FUNCTION_BEGIN
CGRAPH_ASSERT_INIT(false)
/**
* 这里只是清空list中的信息，并不真正销毁 pipeline对象
* 因为pipeline 对象统一在 Factory中管控
*/
used_list_.clear();
free_list_.clear();
CGRAPH_FUNCTION_END
}
CBool GPipelineManager::find(GPipelinePtr ptr) const {
/**
* 如果在其中一个位置，找到了，就返回 true了
* 非线程安全，建议 init 之前使用
*/
CBool result = std::any_of(used_list_.begin(), used_list_.end(),
[ptr] (GPipelinePtr cur) {
return (ptr == cur);
});
result |= std::any_of(free_list_.begin(), free_list_.end(),
[ptr] (GPipelinePtr cur) {
return (ptr == cur);
});
return result;
}
CStatus GPipelineManager::remove(GPipelinePtr ptr) {
CGRAPH_FUNCTION_BEGIN
CGRAPH_ASSERT_NOT_NULL(ptr)
CGRAPH_ASSERT_INIT(false)
free_list_.remove(ptr); // 在非初始化的情况下，仅可能在 free_list 中包含
CGRAPH_FUNCTION_END
}
CSize GPipelineManager::getSize() const {
CSize size = free_list_.size() + used_list_.size();
return size;
}
GPipelineManager::~GPipelineManager() {
clear();
}
GPipelinePtr GPipelineManager::fetch() {
GPipelinePtr pipeline = nullptr;
CGRAPH_LOCK_GUARD lk(mutex_);
if (free_list_.empty()) {
// 如果没有 free的了，则直接返回空了
return pipeline;
}
pipeline = free_list_.front();
free_list_.pop_front(); // 如果有的话，就fetch出去了
used_list_.push_back(pipeline);
return pipeline;
}
CStatus GPipelineManager::release(GPipelinePtr ptr) {
CGRAPH_FUNCTION_BEGIN
CGRAPH_ASSERT_NOT_NULL(ptr)
CGRAPH_LOCK_GUARD lk(mutex_);
CBool result = std::any_of(used_list_.begin(), used_list_.end(),
[ptr] (GPipelinePtr cur) {
return (ptr == cur);
});
if (!result) {
CGRAPH_RETURN_ERROR_STATUS("pipeline is not used")
}
used_list_.remove(ptr);
free_list_.push_front(ptr); // 最先执行的，放回头部，可能会增加cache触达
CGRAPH_FUNCTION_END
}
CGRAPH_NAMESPACE_END