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ecore_exe_example.c

This is a process that will send messages to a child and it will stop when it receives "quit".Check the Full tutorial

#include <stdio.h>
#include <string.h>
#include <Ecore.h>
#define BUFFER_SIZE 1024
static Eina_Bool
_msg_from_child_handler(void *data EINA_UNUSED, int type EINA_UNUSED, void *event)
{
Ecore_Exe_Event_Data *dataFromProcess = (Ecore_Exe_Event_Data *)event;
char msg[BUFFER_SIZE];
if (dataFromProcess->size >= (BUFFER_SIZE - 1))
{
fprintf(stdout, "Data too big for bugger. error\n");
return ECORE_CALLBACK_DONE;
}
strncpy(msg, dataFromProcess->data, dataFromProcess->size);
msg[dataFromProcess->size] = 0;
if (strcmp(msg, "quit") == 0)
{
fprintf(stdout, "My child said to me, QUIT!\n");
ecore_main_loop_quit();
}
else
fprintf(stdout, "I received a message from my child: %s\n", msg);
return ECORE_CALLBACK_DONE;
}
static Eina_Bool
_sendMessage(void *data)
{
static int numberOfMessages = 0;
Ecore_Exe *childHandle = (Ecore_Exe *)data;
char msg[BUFFER_SIZE];
sprintf(msg, " Message: %d\n", numberOfMessages);
numberOfMessages++;
if (ecore_exe_send(childHandle, msg, strlen(msg)) != EINA_TRUE)
fprintf(stderr, "Could not send my name to the child\n");
else
fprintf(stdout,
"I'm the father and I sent this message to the child: %s\n", msg);
return ECORE_CALLBACK_RENEW;
}
int
main(void)
{
pid_t childPid;
Ecore_Exe *childHandle;
if (!ecore_init())
goto exit;
childHandle = ecore_exe_pipe_run("./ecore_exe_example_child",
ECORE_EXE_PIPE_WRITE |
ECORE_EXE_PIPE_READ_LINE_BUFFERED |
ECORE_EXE_PIPE_READ, NULL);
if (childHandle == NULL)
{
fprintf(stderr, "Could not create a child process!\n");
goto ecore_shutdown;
}
childPid = ecore_exe_pid_get(childHandle);
if (childPid == -1)
fprintf(stderr, "Could not retrive the PID!\n");
else
fprintf(stdout, "The child process has PID:%u\n", (unsigned int)childPid);
ecore_event_handler_add(ECORE_EXE_EVENT_DATA, _msg_from_child_handler, NULL);
ecore_timer_add(1, _sendMessage, childHandle);
ecore_main_loop_begin();
ecore_exe_free(childHandle); //This will not affect the child process
ecore_shutdown();
return EXIT_SUCCESS;
ecore_shutdown:
ecore_shutdown();
exit:
return EXIT_FAILURE;
}