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std::string_view 的使用

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种太阳的热带美短
2026-06-29 09:40:55 +08:00
parent ccf7eecc29
commit c25e58ae17
40 changed files with 532 additions and 522 deletions
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Core/Shared_Memory/Shared_Memory.cpp
+7 -5
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@@ -5,24 +5,26 @@
#include "Core/transmit_protocol/Channel_Simulator/global.h"
#include <sstream>
#include <string_view>
namespace Psc {
Pure_Share_Memory::Pure_Share_Memory(const std::string &name, size_t alloc_size) {
mutex.init("Pure_Share_Memory_" + name + "_mutex");
bool open = check_if_shared_memory_exists(name);
Pure_Share_Memory::Pure_Share_Memory(std::string_view name, size_t alloc_size) {
auto name_string = std::string(name);
mutex.init("Pure_Share_Memory_" + name_string + "_mutex");
bool open = check_if_shared_memory_exists(name_string);
bool ok;
bool create;
std::ostringstream oss;
if (open) {
oss << "【打开共享内存】:[" << name << "]" << std::endl;
ok = shm.open(name, alloc_size);
ok = shm.open(name_string, alloc_size);
create = false;
} else {
oss << "【创建共享内存】】:[" << name << "]" << std::endl;
ok = shm.create(name, alloc_size);
ok = shm.create(name_string, alloc_size);
create = true;
}
Core/Shared_Memory/Shared_Memory.h
+6 -5
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@@ -1,4 +1,5 @@
#pragma once
#include <string_view>
#include "../Base/global_include.h"
#include "../system/export.h"
#include <cassert>
@@ -9,13 +10,13 @@
#include <string>
namespace Psc {
bool check_if_shared_memory_exists(const std::string &name);
bool check_if_shared_memory_exists(std::string_view name);
class Shared_Memory {
public:
Shared_Memory() = default;
~Shared_Memory();
bool create(const std::string &name, size_t size);
bool open(const std::string &name, size_t size);
bool create(std::string_view name, size_t size);
bool open(std::string_view name, size_t size);
[[nodiscard]] uint8_t *data() const { return (uint8_t *) m_ptr; }
[[nodiscard]] size_t size() const { return m_size; }
void close();
@@ -35,7 +36,7 @@ namespace Psc {
class Cross_Process_Mutex {
public:
explicit Cross_Process_Mutex();
void init(const std::string &mutexName);
void init(std::string_view mutexName);
~Cross_Process_Mutex();
void lock();
void unlock();
@@ -74,7 +75,7 @@ namespace Psc {
public:
Shared_Memory shm;
Cross_Process_Mutex mutex;
Pure_Share_Memory(const std::string &name, size_t alloc_size);
Pure_Share_Memory(std::string_view name, size_t alloc_size);
};
Core/Shared_Memory/Shared_Memory_linux.cpp
+5 -4
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@@ -15,9 +15,10 @@
#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string_view>
namespace Psc {
bool check_if_shared_memory_exists(const std::string &name) {
bool check_if_shared_memory_exists(std::string_view name) {
int fd = shm_open(name.c_str(), O_RDWR, 0777);
if (fd < 0) {
return false;
@@ -26,7 +27,7 @@ bool check_if_shared_memory_exists(const std::string &name) {
return true;
}
Shared_Memory::~Shared_Memory() { close(); }
bool Shared_Memory::create(const std::string &name, size_t size) {
bool Shared_Memory::create(std::string_view name, size_t size) {
m_name = name;
m_size = size;
m_fd = shm_open(name.c_str(), O_CREAT | O_RDWR, 0777);
@@ -41,7 +42,7 @@ bool Shared_Memory::create(const std::string &name, size_t size) {
}
return m_ptr != MAP_FAILED;
}
bool Shared_Memory::open(const std::string &name, size_t size) {
bool Shared_Memory::open(std::string_view name, size_t size) {
m_name = name;
m_size = size;
m_fd = shm_open(name.c_str(), O_RDWR, 0777);
@@ -72,7 +73,7 @@ struct MutexBlock {
Cross_Process_Mutex::Cross_Process_Mutex() {}
void Cross_Process_Mutex::init(const std::string &mutexName) {
void Cross_Process_Mutex::init(std::string_view mutexName) {
this->m_mutexName = mutexName;
bool creator = false;
Core/Shared_Memory/Shared_Memory_win.cpp
+11 -7
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@@ -1,4 +1,5 @@
#include "Shared_Memory.h"
#include <string_view>
#ifdef _WIN32
#include <Windows.h>
namespace Psc {
@@ -16,7 +17,7 @@ static std::string win_error_msg(DWORD err = GetLastError()) {
}
Cross_Process_Mutex::Cross_Process_Mutex() : m_mutexHandle(nullptr) {}
void Cross_Process_Mutex::init(const std::string &mutexName) {
void Cross_Process_Mutex::init(std::string_view mutexName) {
m_mutexName = mutexName;
m_mutexHandle = OpenMutexA(MUTEX_ALL_ACCESS, FALSE, m_mutexName.c_str());
if (!m_mutexHandle) {
@@ -57,8 +58,9 @@ void Cross_Process_Mutex::unlock() {
}
}
bool check_if_shared_memory_exists(const std::string &name) {
HANDLE hMapFile = OpenFileMappingA(FILE_MAP_READ, FALSE, name.c_str());
bool check_if_shared_memory_exists(std::string_view name) {
auto name_string = std::string(name);
HANDLE hMapFile = OpenFileMappingA(FILE_MAP_READ, FALSE, name_string.c_str());
if (!hMapFile) {
DWORD err = GetLastError();
if (err != ERROR_FILE_NOT_FOUND) {
@@ -74,12 +76,13 @@ bool check_if_shared_memory_exists(const std::string &name) {
Shared_Memory::~Shared_Memory() { close(); }
bool Shared_Memory::create(const std::string &name, size_t size) {
bool Shared_Memory::create(std::string_view name, size_t size) {
std::cout << "创建共享内存【" << name << "】" << std::endl;
auto name_string = std::string(name);
m_size = size;
m_handle = CreateFileMappingA(INVALID_HANDLE_VALUE, nullptr, PAGE_READWRITE,
0, (DWORD)size, name.c_str());
0, (DWORD)size, name_string.c_str());
if (!m_handle) {
std::cerr << "CreateFileMappingA failed for name=" << name << ": "
@@ -98,11 +101,12 @@ bool Shared_Memory::create(const std::string &name, size_t size) {
return true;
}
bool Shared_Memory::open(const std::string &name, size_t size) {
bool Shared_Memory::open(std::string_view name, size_t size) {
std::cout << "打开共享内存【" << name << "】" << std::endl;
auto name_string = std::string(name);
m_size = size;
m_handle = OpenFileMappingA(FILE_MAP_ALL_ACCESS, FALSE, name.c_str());
m_handle = OpenFileMappingA(FILE_MAP_ALL_ACCESS, FALSE, name_string.c_str());
if (!m_handle) {
std::cerr << "OpenFileMappingA failed for name=" << name << ": "