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[common] moved linux agnostic code into the common library

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This commit is contained in:
Geoffrey McRae 2020-01-02 23:34:35 +11:00
parent 0c6ff6822d
commit 1c1d2a0568
6 changed files with 273 additions and 208 deletions
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2
VERSION
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@ -1 +1 @@
B1-40-g491ffc3576+1
B1-41-g0c6ff6822d+1

38
c-host/platform/Linux/capture/XCB/src/xcb.c
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@ -20,6 +20,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include "interface/capture.h"
#include "interface/platform.h"
#include "common/debug.h"
#include "common/event.h"
#include <string.h>
#include <assert.h>
#include <stdlib.h>
@ -37,7 +38,7 @@ struct xcb
uint32_t seg;
int shmID;
void * data;
osEventHandle * frameEvent;
LGEvent * frameEvent;
unsigned int width;
unsigned int height;
@ -67,7 +68,7 @@ static bool xcb_create()
this = (struct xcb *)calloc(sizeof(struct xcb), 1);
this->shmID = -1;
this->data = (void *)-1;
this->frameEvent = os_createEvent(true);
this->frameEvent = lgCreateEvent(true, 20);
if (!this->frameEvent)
{
@ -84,7 +85,7 @@ static bool xcb_init()
assert(this);
assert(!this->initialized);
os_resetEvent(this->frameEvent);
lgResetEvent(this->frameEvent);
this->xcb = xcb_connect(NULL, NULL);
if (!this->xcb || xcb_connection_has_error(this->xcb))
@ -158,7 +159,7 @@ static bool xcb_deinit()
static void xcb_free()
{
os_freeEvent(this->frameEvent);
lgFreeEvent(this->frameEvent);
free(this);
this = NULL;
}
@ -187,20 +188,29 @@ static CaptureResult xcb_capture()
0);
this->hasFrame = true;
os_signalEvent(this->frameEvent);
lgSignalEvent(this->frameEvent);
}
return CAPTURE_RESULT_OK;
}
static CaptureResult xcb_getFrame(CaptureFrame * frame)
static CaptureResult xcb_waitFrame(CaptureFrame * frame)
{
lgWaitEvent(this->frameEvent, TIMEOUT_INFINITE);
frame->width = this->width;
frame->height = this->height;
frame->pitch = this->width * 4;
frame->stride = this->width;
frame->format = CAPTURE_FMT_BGRA;
return CAPTURE_RESULT_OK;
}
static CaptureResult xcb_getFrame(FrameBuffer frame)
{
assert(this);
assert(this->initialized);
assert(frame);
assert(frame->data);
os_waitEvent(this->frameEvent, TIMEOUT_INFINITE);
xcb_shm_get_image_reply_t * img;
img = xcb_shm_get_image_reply(this->xcb, this->imgC, NULL);
@ -210,12 +220,7 @@ static CaptureResult xcb_getFrame(CaptureFrame * frame)
return CAPTURE_RESULT_ERROR;
}
frame->width = this->width;
frame->height = this->height;
frame->pitch = this->width * 4;
frame->stride = this->width;
frame->format = CAPTURE_FMT_BGRA;
memcpy(frame->data, this->data, this->width * this->height * 4);
framebuffer_write(frame, this->data, this->width * this->height * 4);
free(img);
this->hasFrame = false;
@ -237,6 +242,7 @@ struct CaptureInterface Capture_XCB =
.free = xcb_free,
.getMaxFrameSize = xcb_getMaxFrameSize,
.capture = xcb_capture,
.waitFrame = xcb_waitFrame,
.getFrame = xcb_getFrame,
.getPointer = xcb_getPointer
};

192
c-host/platform/Linux/src/platform.c
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@ -20,6 +20,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include "interface/platform.h"
#include "common/debug.h"
#include "common/option.h"
#include "common/thread.h"
#include <assert.h>
#include <getopt.h>
@ -44,15 +45,6 @@ struct app
static struct app app;
struct osThreadHandle
{
const char * name;
osThreadFunction function;
void * opaque;
pthread_t handle;
int resultCode;
};
void sigHandler(int signo)
{
DEBUG_INFO("SIGINT");
@ -269,185 +261,3 @@ void os_shmemUnmap()
munmap(app.shmMap, app.shmSize);
app.shmMap = MAP_FAILED;
}
static void * threadWrapper(void * opaque)
{
osThreadHandle * handle = (osThreadHandle *)opaque;
handle->resultCode = handle->function(handle->opaque);
return NULL;
}
bool os_createThread(const char * name, osThreadFunction function, void * opaque, osThreadHandle ** handle)
{
*handle = (osThreadHandle*)malloc(sizeof(osThreadHandle));
(*handle)->name = name;
(*handle)->function = function;
(*handle)->opaque = opaque;
if (pthread_create(&(*handle)->handle, NULL, threadWrapper, *handle) != 0)
{
DEBUG_ERROR("pthread_create failed for thread: %s", name);
free(*handle);
*handle = NULL;
return false;
}
return true;
}
bool os_joinThread(osThreadHandle * handle, int * resultCode)
{
if (pthread_join(handle->handle, NULL) != 0)
{
DEBUG_ERROR("pthread_join failed for thread: %s", handle->name);
free(handle);
return false;
}
if (resultCode)
*resultCode = handle->resultCode;
free(handle);
return true;
}
struct osEventHandle
{
pthread_mutex_t mutex;
pthread_cond_t cond;
bool flag;
bool autoReset;
};
osEventHandle * os_createEvent(bool autoReset)
{
osEventHandle * handle = (osEventHandle *)calloc(sizeof(osEventHandle), 1);
if (!handle)
{
DEBUG_ERROR("Failed to allocate memory");
return NULL;
}
if (pthread_mutex_init(&handle->mutex, NULL) != 0)
{
DEBUG_ERROR("Failed to create the mutex");
free(handle);
return NULL;
}
if (pthread_cond_init(&handle->cond, NULL) != 0)
{
pthread_mutex_destroy(&handle->mutex);
free(handle);
return NULL;
}
handle->autoReset = autoReset;
return handle;
}
void os_freeEvent(osEventHandle * handle)
{
assert(handle);
pthread_cond_destroy (&handle->cond );
pthread_mutex_destroy(&handle->mutex);
free(handle);
}
bool os_waitEvent(osEventHandle * handle, unsigned int timeout)
{
assert(handle);
if (pthread_mutex_lock(&handle->mutex) != 0)
{
DEBUG_ERROR("Failed to lock the mutex");
return false;
}
while(!handle->flag)
{
if (timeout == TIMEOUT_INFINITE)
{
if (pthread_cond_wait(&handle->cond, &handle->mutex) != 0)
{
DEBUG_ERROR("Wait to wait on the condition");
return false;
}
}
else
{
struct timespec ts;
ts.tv_sec = timeout / 1000;
ts.tv_nsec = (timeout % 1000) * 1000000;
switch(pthread_cond_timedwait(&handle->cond, &handle->mutex, &ts))
{
case ETIMEDOUT:
return false;
default:
DEBUG_ERROR("Timed wait failed");
return false;
}
}
}
if (handle->autoReset)
handle->flag = false;
if (pthread_mutex_unlock(&handle->mutex) != 0)
{
DEBUG_ERROR("Failed to unlock the mutex");
return false;
}
return true;
}
bool os_signalEvent(osEventHandle * handle)
{
assert(handle);
if (pthread_mutex_lock(&handle->mutex) != 0)
{
DEBUG_ERROR("Failed to lock the mutex");
return false;
}
handle->flag = true;
if (pthread_mutex_unlock(&handle->mutex) != 0)
{
DEBUG_ERROR("Failed to unlock the mutex");
return false;
}
if (pthread_cond_signal(&handle->cond) != 0)
{
DEBUG_ERROR("Failed to signal the condition");
return false;
}
return true;
}
bool os_resetEvent(osEventHandle * handle)
{
assert(handle);
if (pthread_mutex_lock(&handle->mutex) != 0)
{
DEBUG_ERROR("Failed to lock the mutex");
return false;
}
handle->flag = false;
if (pthread_mutex_unlock(&handle->mutex) != 0)
{
DEBUG_ERROR("Failed to unlock the mutex");
return false;
}
return true;
}

6
common/src/platform/linux/CMakeLists.txt
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@ -8,4 +8,10 @@ include_directories(
add_library(lg_common_platform_code STATIC
crash.c
sysinfo.c
thread.c
event.c
)
if(ENABLE_BACKTRACE)
target_link_libraries(lg_common_platform_code bfd)
endif()

169
common/src/platform/linux/event.c Normal file
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@ -0,0 +1,169 @@
/*
Looking Glass - KVM FrameRelay (KVMFR) Client
Copyright (C) 2017-2019 Geoffrey McRae <geoff@hostfission.com>
https://looking-glass.hostfission.com
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 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 General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "common/event.h"
#include "common/debug.h"
#include <stdlib.h>
#include <pthread.h>
#include <assert.h>
#include <errno.h>
struct LGEvent
{
pthread_mutex_t mutex;
pthread_cond_t cond;
bool flag;
bool autoReset;
};
LGEvent * lgCreateEvent(bool autoReset, unsigned int msSpinTime)
{
LGEvent * handle = (LGEvent *)calloc(sizeof(LGEvent), 1);
if (!handle)
{
DEBUG_ERROR("Failed to allocate memory");
return NULL;
}
if (pthread_mutex_init(&handle->mutex, NULL) != 0)
{
DEBUG_ERROR("Failed to create the mutex");
free(handle);
return NULL;
}
if (pthread_cond_init(&handle->cond, NULL) != 0)
{
pthread_mutex_destroy(&handle->mutex);
free(handle);
return NULL;
}
handle->autoReset = autoReset;
return handle;
}
void lgFreeEvent(LGEvent * handle)
{
assert(handle);
pthread_cond_destroy (&handle->cond );
pthread_mutex_destroy(&handle->mutex);
free(handle);
}
bool lgWaitEvent(LGEvent * handle, unsigned int timeout)
{
assert(handle);
if (pthread_mutex_lock(&handle->mutex) != 0)
{
DEBUG_ERROR("Failed to lock the mutex");
return false;
}
while(!handle->flag)
{
if (timeout == TIMEOUT_INFINITE)
{
if (pthread_cond_wait(&handle->cond, &handle->mutex) != 0)
{
DEBUG_ERROR("Wait to wait on the condition");
return false;
}
}
else
{
struct timespec ts;
ts.tv_sec = timeout / 1000;
ts.tv_nsec = (timeout % 1000) * 1000000;
switch(pthread_cond_timedwait(&handle->cond, &handle->mutex, &ts))
{
case ETIMEDOUT:
return false;
default:
DEBUG_ERROR("Timed wait failed");
return false;
}
}
}
if (handle->autoReset)
handle->flag = false;
if (pthread_mutex_unlock(&handle->mutex) != 0)
{
DEBUG_ERROR("Failed to unlock the mutex");
return false;
}
return true;
}
bool lgSignalEvent(LGEvent * handle)
{
assert(handle);
if (pthread_mutex_lock(&handle->mutex) != 0)
{
DEBUG_ERROR("Failed to lock the mutex");
return false;
}
handle->flag = true;
if (pthread_mutex_unlock(&handle->mutex) != 0)
{
DEBUG_ERROR("Failed to unlock the mutex");
return false;
}
if (pthread_cond_signal(&handle->cond) != 0)
{
DEBUG_ERROR("Failed to signal the condition");
return false;
}
return true;
}
bool lgResetEvent(LGEvent * handle)
{
assert(handle);
if (pthread_mutex_lock(&handle->mutex) != 0)
{
DEBUG_ERROR("Failed to lock the mutex");
return false;
}
handle->flag = false;
if (pthread_mutex_unlock(&handle->mutex) != 0)
{
DEBUG_ERROR("Failed to unlock the mutex");
return false;
}
return true;
}

74
common/src/platform/linux/thread.c Normal file
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@ -0,0 +1,74 @@
/*
Looking Glass - KVM FrameRelay (KVMFR) Client
Copyright (C) 2017-2020 Geoffrey McRae <geoff@hostfission.com>
https://looking-glass.hostfission.com
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 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 General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "common/thread.h"
#include <stdlib.h>
#include <pthread.h>
#include "common/debug.h"
struct LGThread
{
const char * name;
LGThreadFunction function;
void * opaque;
pthread_t handle;
int resultCode;
};
static void * threadWrapper(void * opaque)
{
LGThread * handle = (LGThread *)opaque;
handle->resultCode = handle->function(handle->opaque);
return NULL;
}
bool lgCreateThread(const char * name, LGThreadFunction function, void * opaque, LGThread ** handle)
{
*handle = (LGThread*)malloc(sizeof(LGThread));
(*handle)->name = name;
(*handle)->function = function;
(*handle)->opaque = opaque;
if (pthread_create(&(*handle)->handle, NULL, threadWrapper, *handle) != 0)
{
DEBUG_ERROR("pthread_create failed for thread: %s", name);
free(*handle);
*handle = NULL;
return false;
}
return true;
}
bool lgJoinThread(LGThread * handle, int * resultCode)
{
if (pthread_join(handle->handle, NULL) != 0)
{
DEBUG_ERROR("pthread_join failed for thread: %s", handle->name);
free(handle);
return false;
}
if (resultCode)
*resultCode = handle->resultCode;
free(handle);
return true;
}