mirror of
https://github.com/mutouyun/cpp-ipc.git
synced 2025-12-06 16:56:45 +08:00
874e0b25bc
ISSUE: MSVC compiler reports warning C4138: '*/' found outside of comment for patterns like 'void */*p*/' where the pointer asterisk is immediately followed by a comment start. AFFECTED FILES: - include/libipc/mem/new.h (line 30) - src/libipc/platform/win/mutex.h (line 54) - src/libipc/platform/win/semaphore.h (line 53) CHANGES: Changed 'type */*param*/' to 'type * /*param*/' (added space before comment) Examples: - void */*p*/ → void * /*p*/ - char const */*name*/ → char const * /*name*/ This resolves the MSVC warning while maintaining code functionality and keeping the commented-out parameter names for documentation.
110 lines
2.6 KiB
C++
110 lines
2.6 KiB
C++
#pragma once
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#include <cstdint>
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#include <system_error>
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#if defined(__MINGW32__)
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#include <windows.h>
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#else
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#include <Windows.h>
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#endif
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#include "libipc/utility/log.h"
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#include "to_tchar.h"
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#include "get_sa.h"
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namespace ipc {
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namespace detail {
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namespace sync {
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class mutex {
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HANDLE h_ = NULL;
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public:
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mutex() noexcept = default;
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~mutex() noexcept = default;
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static void init() {}
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HANDLE native() const noexcept {
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return h_;
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}
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bool valid() const noexcept {
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return h_ != NULL;
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}
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bool open(char const *name) noexcept {
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close();
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h_ = ::CreateMutex(detail::get_sa(), FALSE, detail::to_tchar(name).c_str());
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if (h_ == NULL) {
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ipc::error("fail CreateMutex[%lu]: %s\n", ::GetLastError(), name);
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return false;
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}
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return true;
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}
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void close() noexcept {
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if (!valid()) return;
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::CloseHandle(h_);
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h_ = NULL;
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}
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void clear() noexcept {
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close();
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}
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static void clear_storage(char const * /*name*/) noexcept {
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}
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bool lock(std::uint64_t tm) noexcept {
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DWORD ret, ms = (tm == invalid_value) ? INFINITE : static_cast<DWORD>(tm);
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for(;;) {
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switch ((ret = ::WaitForSingleObject(h_, ms))) {
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case WAIT_OBJECT_0:
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return true;
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case WAIT_TIMEOUT:
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return false;
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case WAIT_ABANDONED:
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ipc::log("fail WaitForSingleObject[%lu]: WAIT_ABANDONED, try again.\n", ::GetLastError());
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if (!unlock()) {
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return false;
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}
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break; // loop again
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default:
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ipc::error("fail WaitForSingleObject[%lu]: 0x%08X\n", ::GetLastError(), ret);
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return false;
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}
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}
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}
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bool try_lock() noexcept(false) {
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DWORD ret = ::WaitForSingleObject(h_, 0);
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switch (ret) {
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case WAIT_OBJECT_0:
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return true;
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case WAIT_TIMEOUT:
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return false;
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case WAIT_ABANDONED:
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unlock();
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LIBIPC_FALLTHROUGH;
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default:
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ipc::error("fail WaitForSingleObject[%lu]: 0x%08X\n", ::GetLastError(), ret);
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throw std::system_error{static_cast<int>(ret), std::system_category()};
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}
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}
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bool unlock() noexcept {
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if (!::ReleaseMutex(h_)) {
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ipc::error("fail ReleaseMutex[%lu]\n", ::GetLastError());
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return false;
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}
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return true;
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}
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};
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} // namespace sync
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} // namespace detail
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} // namespace ipc
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