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KimLS
+154
-154
@@ -1,19 +1,19 @@
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/* EQEMu: Everquest Server Emulator
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Copyright (C) 2001-2013 EQEMu Development Team (http://eqemulator.net)
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/* EQEMu: Everquest Server Emulator
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Copyright (C) 2001-2013 EQEMu Development Team (http://eqemulator.net)
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY except by those people which sell it, which
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY except by those people which sell it, which
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are required to give you total support for your newly bought product;
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without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "memory_mapped_file.h"
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@@ -35,160 +35,160 @@
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namespace EQEmu {
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struct MemoryMappedFile::Implementation {
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struct MemoryMappedFile::Implementation {
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#ifdef _WINDOWS
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HANDLE mapped_object_;
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HANDLE mapped_object_;
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#else
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int fd_;
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int fd_;
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#endif
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};
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};
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MemoryMappedFile::MemoryMappedFile(std::string filename, uint32 size)
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: filename_(filename), size_(size) {
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imp_ = new Implementation;
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#ifdef _WINDOWS
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DWORD total_size = size + sizeof(shared_memory_struct);
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HANDLE file = CreateFile(filename.c_str(),
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GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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nullptr,
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OPEN_ALWAYS,
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0,
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nullptr);
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if(file == INVALID_HANDLE_VALUE) {
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EQ_EXCEPT("Shared Memory", "Could not open a file for this shared memory segment.");
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}
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imp_->mapped_object_ = CreateFileMapping(file,
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nullptr,
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PAGE_READWRITE,
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0,
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total_size,
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filename.c_str());
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if(!imp_->mapped_object_) {
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EQ_EXCEPT("Shared Memory", "Could not create a file mapping for this shared memory file.");
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}
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memory_ = reinterpret_cast<shared_memory_struct*>(MapViewOfFile(imp_->mapped_object_,
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FILE_MAP_ALL_ACCESS,
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0,
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0,
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total_size));
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if(!memory_) {
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EQ_EXCEPT("Shared Memory", "Could not map a view of the shared memory file.");
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}
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#else
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size_t total_size = size + sizeof(shared_memory_struct);
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imp_->fd_ = open(filename.c_str(), O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
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if(imp_->fd_ == -1) {
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EQ_EXCEPT("Shared Memory", "Could not open a file for this shared memory segment.");
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}
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if(ftruncate(imp_->fd_, total_size) == -1) {
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EQ_EXCEPT("Shared Memory", "Could not set file size for this shared memory segment.");
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}
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memory_ = reinterpret_cast<shared_memory_struct*>(
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mmap(nullptr, total_size, PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, imp_->fd_, 0));
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if(memory_ == MAP_FAILED) {
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EQ_EXCEPT("Shared Memory", "Could not create a file mapping for this shared memory file.");
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}
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#endif
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}
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MemoryMappedFile::MemoryMappedFile(std::string filename)
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: filename_(filename) {
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imp_ = new Implementation;
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//get existing size
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FILE *f = fopen(filename.c_str(), "rb");
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if(!f) {
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EQ_EXCEPT("Shared Memory", "Could not open the file to find the existing file size.");
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}
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fseek(f, 0U, SEEK_END);
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uint32 size = static_cast<uint32>(ftell(f)) - sizeof(shared_memory_struct);
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size_ = size;
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fclose(f);
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MemoryMappedFile::MemoryMappedFile(std::string filename, uint32 size)
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: filename_(filename), size_(size) {
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imp_ = new Implementation;
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#ifdef _WINDOWS
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DWORD total_size = size + sizeof(shared_memory_struct);
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HANDLE file = CreateFile(filename.c_str(),
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GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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nullptr,
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OPEN_ALWAYS,
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0,
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nullptr);
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if(file == INVALID_HANDLE_VALUE) {
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EQ_EXCEPT("Shared Memory", "Could not open a file for this shared memory segment.");
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}
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imp_->mapped_object_ = CreateFileMapping(file,
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nullptr,
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PAGE_READWRITE,
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0,
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total_size,
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filename.c_str());
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if(!imp_->mapped_object_) {
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EQ_EXCEPT("Shared Memory", "Could not create a file mapping for this shared memory file.");
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}
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memory_ = reinterpret_cast<shared_memory_struct*>(MapViewOfFile(imp_->mapped_object_,
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FILE_MAP_ALL_ACCESS,
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0,
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0,
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total_size));
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if(!memory_) {
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EQ_EXCEPT("Shared Memory", "Could not map a view of the shared memory file.");
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}
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DWORD total_size = size + sizeof(shared_memory_struct);
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HANDLE file = CreateFile(filename.c_str(),
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GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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nullptr,
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OPEN_ALWAYS,
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0,
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nullptr);
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if(file == INVALID_HANDLE_VALUE) {
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EQ_EXCEPT("Shared Memory", "Could not open a file for this shared memory segment.");
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}
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imp_->mapped_object_ = CreateFileMapping(file,
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nullptr,
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PAGE_READWRITE,
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0,
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total_size,
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filename.c_str());
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if(!imp_->mapped_object_) {
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EQ_EXCEPT("Shared Memory", "Could not create a file mapping for this shared memory file.");
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}
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memory_ = reinterpret_cast<shared_memory_struct*>(MapViewOfFile(imp_->mapped_object_,
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FILE_MAP_ALL_ACCESS,
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0,
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0,
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total_size));
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if(!memory_) {
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EQ_EXCEPT("Shared Memory", "Could not map a view of the shared memory file.");
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}
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#else
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size_t total_size = size + sizeof(shared_memory_struct);
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imp_->fd_ = open(filename.c_str(), O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
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if(imp_->fd_ == -1) {
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EQ_EXCEPT("Shared Memory", "Could not open a file for this shared memory segment.");
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}
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size_t total_size = size + sizeof(shared_memory_struct);
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imp_->fd_ = open(filename.c_str(), O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
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if(imp_->fd_ == -1) {
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EQ_EXCEPT("Shared Memory", "Could not open a file for this shared memory segment.");
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}
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if(ftruncate(imp_->fd_, total_size) == -1) {
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EQ_EXCEPT("Shared Memory", "Could not set file size for this shared memory segment.");
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}
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if(ftruncate(imp_->fd_, total_size) == -1) {
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EQ_EXCEPT("Shared Memory", "Could not set file size for this shared memory segment.");
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}
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memory_ = reinterpret_cast<shared_memory_struct*>(
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mmap(nullptr, total_size, PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, imp_->fd_, 0));
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memory_ = reinterpret_cast<shared_memory_struct*>(
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mmap(nullptr, total_size, PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, imp_->fd_, 0));
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if(memory_ == MAP_FAILED) {
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EQ_EXCEPT("Shared Memory", "Could not create a file mapping for this shared memory file.");
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}
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if(memory_ == MAP_FAILED) {
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EQ_EXCEPT("Shared Memory", "Could not create a file mapping for this shared memory file.");
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}
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#endif
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}
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}
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MemoryMappedFile::MemoryMappedFile(std::string filename)
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: filename_(filename) {
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imp_ = new Implementation;
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//get existing size
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FILE *f = fopen(filename.c_str(), "rb");
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if(!f) {
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EQ_EXCEPT("Shared Memory", "Could not open the file to find the existing file size.");
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}
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fseek(f, 0U, SEEK_END);
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uint32 size = static_cast<uint32>(ftell(f)) - sizeof(shared_memory_struct);
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size_ = size;
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fclose(f);
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MemoryMappedFile::~MemoryMappedFile() {
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#ifdef _WINDOWS
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if(imp_->mapped_object_) {
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CloseHandle(imp_->mapped_object_);
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}
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DWORD total_size = size + sizeof(shared_memory_struct);
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HANDLE file = CreateFile(filename.c_str(),
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GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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nullptr,
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OPEN_ALWAYS,
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0,
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nullptr);
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if(file == INVALID_HANDLE_VALUE) {
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EQ_EXCEPT("Shared Memory", "Could not open a file for this shared memory segment.");
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}
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imp_->mapped_object_ = CreateFileMapping(file,
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nullptr,
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PAGE_READWRITE,
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0,
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total_size,
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filename.c_str());
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if(!imp_->mapped_object_) {
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EQ_EXCEPT("Shared Memory", "Could not create a file mapping for this shared memory file.");
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}
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memory_ = reinterpret_cast<shared_memory_struct*>(MapViewOfFile(imp_->mapped_object_,
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FILE_MAP_ALL_ACCESS,
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0,
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0,
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total_size));
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if(!memory_) {
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EQ_EXCEPT("Shared Memory", "Could not map a view of the shared memory file.");
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}
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#else
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if(memory_) {
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size_t total_size = size_ + sizeof(shared_memory_struct);
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munmap(reinterpret_cast<void*>(memory_), total_size);
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close(imp_->fd_);
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}
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size_t total_size = size + sizeof(shared_memory_struct);
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imp_->fd_ = open(filename.c_str(), O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
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if(imp_->fd_ == -1) {
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EQ_EXCEPT("Shared Memory", "Could not open a file for this shared memory segment.");
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}
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if(ftruncate(imp_->fd_, total_size) == -1) {
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EQ_EXCEPT("Shared Memory", "Could not set file size for this shared memory segment.");
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}
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memory_ = reinterpret_cast<shared_memory_struct*>(
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mmap(nullptr, total_size, PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, imp_->fd_, 0));
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if(memory_ == MAP_FAILED) {
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EQ_EXCEPT("Shared Memory", "Could not create a file mapping for this shared memory file.");
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}
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#endif
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delete imp_;
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}
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void MemoryMappedFile::ZeroFile() {
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memset(reinterpret_cast<void*>(memory_), 0, sizeof(shared_memory_struct));
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memset(memory_->data, 0, size_);
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memory_->size = size_;
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}
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}
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MemoryMappedFile::~MemoryMappedFile() {
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#ifdef _WINDOWS
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if(imp_->mapped_object_) {
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CloseHandle(imp_->mapped_object_);
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}
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#else
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if(memory_) {
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size_t total_size = size_ + sizeof(shared_memory_struct);
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munmap(reinterpret_cast<void*>(memory_), total_size);
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close(imp_->fd_);
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}
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#endif
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delete imp_;
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}
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void MemoryMappedFile::ZeroFile() {
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memset(reinterpret_cast<void*>(memory_), 0, sizeof(shared_memory_struct));
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memset(memory_->data, 0, size_);
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memory_->size = size_;
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}
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} // EQEmu
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