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Пелипенко Иван
2022-12-14 14:13:52 +03:00
parent 430a41fefc
commit c2b8a8d6da
297 changed files with 27331 additions and 24162 deletions
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77
libs/main/io_devices/pisharedmemory.cpp
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@@ -1,24 +1,25 @@
/*
PIP - Platform Independent Primitives
File
Ivan Pelipenko peri4ko@yandex.ru
PIP - Platform Independent Primitives
File
Ivan Pelipenko peri4ko@yandex.ru
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "piincludes_p.h"
#include "pisharedmemory.h"
#include "piincludes_p.h"
#include "pipropertystorage.h"
#if defined(LINUX) || defined(MAC_OS)
# define SHM_POSIX
@@ -30,13 +31,13 @@
#endif
#ifdef MAC_OS
//# include <fcntl.h>
// # include <fcntl.h>
#endif
#ifdef SHM_POSIX
# include <fcntl.h>
# include <sys/stat.h>
# include <sys/mman.h>
# include <sys/stat.h>
#endif
@@ -83,8 +84,7 @@ PISharedMemory::PISharedMemory(): PIIODevice() {
PISharedMemory::PISharedMemory(const PIString & shm_name, int size, PIIODevice::DeviceMode mode): PIIODevice(shm_name, mode) {
initPrivate();
dsize = size;
if (!shm_name.isEmpty())
open();
if (!shm_name.isEmpty()) open();
}
@@ -96,16 +96,16 @@ PISharedMemory::~PISharedMemory() {
bool PISharedMemory::openDevice() {
close();
//piCoutObj << "try open" << path() << dsize;
// piCoutObj << "try open" << path() << dsize;
#ifdef WINDOWS
PRIVATE->name = ("PIP_SHM_" + path()).toByteArray();
PRIVATE->name.push_back(0);
const char * nm = (const char *)PRIVATE->name.data();
PRIVATE->map = OpenFileMappingA(FILE_MAP_ALL_ACCESS, FALSE, nm);
//piCoutObj << "open map =" << ullong(PRIVATE->map);
PRIVATE->map = OpenFileMappingA(FILE_MAP_ALL_ACCESS, FALSE, nm);
// piCoutObj << "open map =" << ullong(PRIVATE->map);
if (!PRIVATE->map) {
PRIVATE->map = CreateFileMappingA(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, (DWORD)dsize, nm);
//piCoutObj << "create map =" << ullong(PRIVATE->map);
// piCoutObj << "create map =" << ullong(PRIVATE->map);
if (!PRIVATE->map) {
piCoutObj << "CreateFileMapping error," << errorString();
return false;
@@ -117,33 +117,32 @@ bool PISharedMemory::openDevice() {
piCoutObj << "MapViewOfFile error," << errorString();
return false;
}
//piCout << PRIVATE->map << PRIVATE->data;
// piCout << PRIVATE->map << PRIVATE->data;
#endif
#ifdef SHM_POSIX
PRIVATE->name = ("/pip_shm_" + path()).toByteArray();
PRIVATE->name.push_back(0);
int fd = shm_open((const char *)PRIVATE->name.data(), O_RDWR, 0777);
//piCoutObj << "try open" << PICoutManipulators::Hex << fd;
// piCoutObj << "try open" << PICoutManipulators::Hex << fd;
if (fd < 0) {
//piCoutObj << "shm_open error," << errorString();
// piCoutObj << "shm_open error," << errorString();
fd = shm_open((const char *)PRIVATE->name.data(), O_RDWR | O_CREAT, 0777);
//piCoutObj << "try create" << PICoutManipulators::Hex << (m | O_CREAT) << fd;
// piCoutObj << "try create" << PICoutManipulators::Hex << (m | O_CREAT) << fd;
if (fd < 0) {
piCoutObj << "shm_open error," << errorString();
return false;
}
PRIVATE->owner = true;
//piCoutObj << "created" << fd;
// piCoutObj << "created" << fd;
}
if (fd >= 0)
ftruncate(fd, dsize);
if (fd >= 0) ftruncate(fd, dsize);
PRIVATE->data = mmap(0, dsize, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
::close(fd);
if (PRIVATE->data == MAP_FAILED) {
piCoutObj << "mmap error," << errorString();
return false;
}
//piCoutObj << "opened" << PRIVATE->data;
// piCoutObj << "opened" << PRIVATE->data;
#endif
return true;
}
@@ -155,13 +154,13 @@ bool PISharedMemory::closeDevice() {
if (PRIVATE->map) CloseHandle(PRIVATE->map);
#endif
#ifdef SHM_POSIX
//piCoutObj << "close" << PIString(PRIVATE->name) << PRIVATE->data;
// piCoutObj << "close" << PIString(PRIVATE->name) << PRIVATE->data;
if (PRIVATE->data) munmap(PRIVATE->data, dsize);
if (PRIVATE->owner) {
//piCout << "unlink" << PIString(PRIVATE->name);
// piCout << "unlink" << PIString(PRIVATE->name);
shm_unlink((const char *)PRIVATE->name.data());
}
//if (fd > 0)
// if (fd > 0)
#endif
initPrivate();
return true;
@@ -204,11 +203,11 @@ void PISharedMemory::configureFromVariantDevice(const PIPropertyStorage & d) {
void PISharedMemory::initPrivate() {
#ifdef WINDOWS
PRIVATE->map = 0;
PRIVATE->map = 0;
PRIVATE->data = 0;
#endif
#ifdef SHM_POSIX
PRIVATE->data = 0;
PRIVATE->data = 0;
PRIVATE->owner = false;
#endif
}
@@ -250,12 +249,12 @@ int PISharedMemory::read(void * read_to, int max_size) {
int PISharedMemory::read(void * read_to, int max_size, int offset) {
#ifdef WINDOWS
if (!PRIVATE->data) return -1;
CopyMemory(read_to, &(((char*)(PRIVATE->data))[offset]), max_size);
CopyMemory(read_to, &(((char *)(PRIVATE->data))[offset]), max_size);
return max_size;
#endif
#ifdef SHM_POSIX
if (!PRIVATE->data) return -1;
memcpy(read_to, &(((char*)(PRIVATE->data))[offset]), max_size);
memcpy(read_to, &(((char *)(PRIVATE->data))[offset]), max_size);
return max_size;
#endif
return -1;
@@ -270,12 +269,12 @@ int PISharedMemory::write(const void * data, int max_size) {
int PISharedMemory::write(const void * data, int max_size, int offset) {
#ifdef WINDOWS
if (!PRIVATE->data) return -1;
CopyMemory(&(((char*)(PRIVATE->data))[offset]), data, max_size);
CopyMemory(&(((char *)(PRIVATE->data))[offset]), data, max_size);
return max_size;
#endif
#ifdef SHM_POSIX
if (!PRIVATE->data) return -1;
memcpy(&(((char*)(PRIVATE->data))[offset]), data, max_size);
memcpy(&(((char *)(PRIVATE->data))[offset]), data, max_size);
return max_size;
#endif
return -1;