mirror of
https://salsa.debian.org/ha-team/libqb
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bd2c07f739
This ringbuffer is usable across processes. the point is to use this for IPC to provide async connections from client to server, but with inherient flow control. This still needs a bit of clean up, but committing now for feedback and as it is quite functional. Signed-off-by: Angus Salkeld <asalkeld@redhat.com>
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <signal.h>
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#include <qb/qbrb.h>
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#include <qb/qbutil.h>
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#define BUFFER_CHUNK_SIZE (50*50*10)
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static qb_ringbuffer_t *rb = NULL;
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static void sigterm_handler (int num)
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{
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printf ("reader: %s(%d)\n", __func__, num);
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qb_rb_close (rb);
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exit (0);
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}
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static void libqb_log_writer (const char *file_name,
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int32_t file_line,
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int32_t severity, const char *msg)
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{
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printf ("libqb:reader: %s:%d %s\n", file_name, file_line, msg);
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}
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int main (int argc, char *argv[])
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{
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ssize_t num_read;
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int8_t buffer[BUFFER_CHUNK_SIZE];
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int32_t keep_reading = 1;
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signal (SIGINT, sigterm_handler);
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qb_util_set_log_function (libqb_log_writer);
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rb = qb_rb_open ("tester", BUFFER_CHUNK_SIZE * 3,
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QB_RB_FLAG_SHARED_PROCESS | QB_RB_FLAG_CREATE);
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if (rb == NULL) {
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printf ("reader: failed to create ringbuffer\n");
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return -1;
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}
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while (keep_reading) {
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num_read =
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qb_rb_chunk_read (rb, buffer, BUFFER_CHUNK_SIZE, 5500);
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if (num_read == -1) {
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printf ("reader: nothing to read\n");
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//usleep(1);
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}
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}
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qb_rb_close (rb);
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return 0;
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}
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