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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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60
libs/main/io_devices/pisharedmemory.h
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@@ -5,22 +5,22 @@
* \~russian Разделяемая память
*/
/*
PIP - Platform Independent Primitives
Shared Memory
Ivan Pelipenko peri4ko@yandex.ru
PIP - Platform Independent Primitives
Shared Memory
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/>.
*/
#ifndef PISHAREDMEMORY_H
@@ -33,26 +33,25 @@
//! \~\brief
//! \~english Shared memory.
//! \~russian Разделяемая память.
class PIP_EXPORT PISharedMemory: public PIIODevice
{
class PIP_EXPORT PISharedMemory: public PIIODevice {
PIIODEVICE(PISharedMemory, "shm");
public:
//! \~english Constructs empty %PISharedMemory
//! \~russian Создает пустой %PISharedMemory
explicit PISharedMemory();
//! \~english Constructs a shared memory object with name "shm_name", size "size" and open mode "mode"
//! \~russian Создает объект разделяемой памяти с именем "shm_name", размером "size" и режимом открытия "mode"
explicit PISharedMemory(const PIString & shm_name, int size, DeviceMode mode = ReadWrite);
virtual ~PISharedMemory();
//! \~english Read all shared memory content and return it as byte array
//! \~russian Читает всю разделяемую память и возвращает её как байтовый массив
PIByteArray readAll();
//! \~english Returns shared memory size
//! \~russian Возвращает размер разделяемой памяти
llong size() const;
@@ -60,11 +59,11 @@ public:
//! \~english Set shared memory size
//! \~russian Устанавливает размер разделяемой памяти
void setSize(llong s);
//! \~english Returns if shared memory object is empty (by size)
//! \~russian Возвращает пустой ли объект разделяемой памяти (по размеру)
bool isEmpty() const {return (size() <= 0);}
bool isEmpty() const { return (size() <= 0); }
//! \~english Read from shared memory to "read_to" no more than "max_size" and return readed bytes count
//! \~russian Читает из разделяемой памяти в "read_to" не более "max_size" и возвращает количество прочитанных байт
int read(void * read_to, int max_size);
@@ -72,7 +71,7 @@ public:
//! \~english Read from shared memory started from "offset" to "read_to" no more than "max_size" and return readed bytes count
//! \~russian Читает из разделяемой памяти с начала "offset" в "read_to" не более "max_size" и возвращает количество прочитанных байт
int read(void * read_to, int max_size, int offset);
//! \~english Write to shared memory "data" with size "max_size" and return written bytes count
//! \~russian Пишет в разделяемую память "data" размером "max_size" и возвращает количество записанных байт
int write(const void * data, int max_size);
@@ -83,12 +82,12 @@ public:
//! \~english Write "data" to shared memory
//! \~russian Пишет в разделяемую память "data"
int write(const PIByteArray & data) {return write(data.data(), data.size_s());}
int write(const PIByteArray & data) { return write(data.data(), data.size_s()); }
//! \~english Write "data" to shared memory
//! \~russian Пишет в разделяемую память "data"
int write(const PIByteArray & data, int offset) {return write(data.data(), data.size_s(), offset);}
int write(const PIByteArray & data, int offset) { return write(data.data(), data.size_s(), offset); }
protected:
bool openDevice() override;
@@ -97,16 +96,15 @@ protected:
void configureFromFullPathDevice(const PIString & full_path) override;
PIPropertyStorage constructVariantDevice() const override;
void configureFromVariantDevice(const PIPropertyStorage & d) override;
ssize_t readDevice(void * read_to, ssize_t max_size) override {return read(read_to, max_size, 0);}
ssize_t writeDevice(const void * data, ssize_t max_size) override {return write(data, max_size, 0);}
DeviceInfoFlags deviceInfoFlags() const override {return PIIODevice::Reliable;}
ssize_t readDevice(void * read_to, ssize_t max_size) override { return read(read_to, max_size, 0); }
ssize_t writeDevice(const void * data, ssize_t max_size) override { return write(data, max_size, 0); }
DeviceInfoFlags deviceInfoFlags() const override { return PIIODevice::Reliable; }
private:
void initPrivate();
int dsize;
PRIVATE_DECLARATION(PIP_EXPORT)
};