64 lines
1.1 KiB
C
64 lines
1.1 KiB
C
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#include "ringlogger.h"
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#include <stdio.h>
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#include <stdbool.h>
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#include <string.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include <sys/wait.h>
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static void forkwrite(void)
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{
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struct log *log = open_log("/tmp/test_log");
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char c[512];
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int i, base;
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bool in_fork = !fork();
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base = 10000 * in_fork;
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for (i = 0; i < 1024; ++i) {
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snprintf(c, 512, "bla bla bla %d", base + i);
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write_msg_to_log(log, "HMM", c);
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}
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if (in_fork)
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_exit(0);
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wait(NULL);
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write_log_to_file("/dev/stdout", log);
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close_log(log);
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}
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static void writetext(const char *text)
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{
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struct log *log = open_log("/tmp/test_log");
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write_msg_to_log(log, "TXT", text);
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close_log(log);
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}
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static void show_line(const char *line, uint64_t time_ns)
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{
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printf("%" PRIu64 ": %s\n", time_ns, line);
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}
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static void follow(void)
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{
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uint32_t cursor = -1;
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struct log *log = open_log("/tmp/test_log");
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for (;;) {
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cursor = view_lines_from_cursor(log, cursor, show_line);
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usleep(1000 * 300);
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}
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}
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int main(int argc, char *argv[])
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{
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if (!strcmp(argv[1], "fork"))
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forkwrite();
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else if (!strcmp(argv[1], "write"))
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writetext(argv[2]);
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else if (!strcmp(argv[1], "follow"))
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follow();
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return 0;
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}
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