Kayne Ruse
94 lines
1.6 KiB
C++
94 lines
1.6 KiB
C++
#include "mail_box.hpp"
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#include <sstream>
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#include <stdexcept>
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MailBox::MailBox() {
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if (!(inLock = SDL_CreateMutex())) {
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std::ostringstream os;
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os << "Failed to create a MailBox mutex; ";
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os << SDL_GetError();
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throw(std::runtime_error(os.str()));
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}
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if (!(outLock = SDL_CreateMutex())) {
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SDL_DestroyMutex(inLock);
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std::ostringstream os;
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os << "Failed to create a MailBox mutex; ";
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os << SDL_GetError();
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throw(std::runtime_error(os.str()));
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}
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}
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MailBox::~MailBox() {
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SDL_DestroyMutex(inLock);
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SDL_DestroyMutex(outLock);
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}
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std::string MailBox::PushIn(std::string msg) {
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SDL_LockMutex(inLock);
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input.push_back(msg);
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SDL_UnlockMutex(inLock);
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return msg;
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}
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std::string MailBox::PeekIn() {
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std::string ret;
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SDL_LockMutex(inLock);
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if (input.size()) {
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ret = input[0];
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}
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else {
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ret = "";
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}
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SDL_UnlockMutex(inLock);
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return ret;
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}
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std::string MailBox::PopIn() {
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std::string ret;
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SDL_LockMutex(inLock);
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if (input.size()) {
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ret = input[0];
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input.pop_front();
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}
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else {
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ret = "";
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}
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SDL_UnlockMutex(inLock);
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return ret;
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}
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std::string MailBox::PushOut(std::string msg) {
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SDL_LockMutex(outLock);
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output.push_back(msg);
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SDL_UnlockMutex(outLock);
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return msg;
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}
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std::string MailBox::PeekOut() {
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std::string ret;
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SDL_LockMutex(outLock);
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if (output.size()) {
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ret = output[0];
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}
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else {
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ret = "";
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}
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SDL_UnlockMutex(outLock);
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return ret;
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}
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std::string MailBox::PopOut() {
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std::string ret;
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SDL_LockMutex(outLock);
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if (output.size()) {
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ret = output[0];
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output.pop_front();
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}
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else {
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ret = "";
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}
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SDL_UnlockMutex(outLock);
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return ret;
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}
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