#include <stdio.h>
#include <unistd.h>
#include <sys/mman.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
#include "../libmarkers/marker.h"
#include "usterr.h"
#include "tracer.h"
+#include "marker-control.h"
+#include "relay.h"
+
+
+char consumer_stack[10000];
+
+#define CPRINTF(fmt, args...) safe_printf(fmt "\n", ## args)
+
+int safe_printf(const char *fmt, ...)
+{
+ static char buf[500];
+ va_list ap;
+ int n;
+
+ va_start(ap, fmt);
+
+ n = vsnprintf(buf, sizeof(buf), fmt, ap);
+
+ write(STDOUT_FILENO, buf, n);
+
+ va_end(ap);
+}
+
+struct consumer_channel {
+ int fd;
+ struct ltt_channel_struct *chan;
+};
+
+int consumer(void *arg)
+{
+ int result;
+ int fd;
+ char str[] = "Hello, this is the consumer.\n";
+ struct ltt_trace_struct *trace;
+ struct consumer_channel *consumer_channels;
+ int i;
+ char trace_name[] = "auto";
+
+ ltt_lock_traces();
+ trace = _ltt_trace_find(trace_name);
+ ltt_unlock_traces();
+
+ if(trace == NULL) {
+ CPRINTF("cannot find trace!");
+ return 1;
+ }
+
+ consumer_channels = (struct consumer_channel *) malloc(trace->nr_channels * sizeof(struct consumer_channel));
+if(consumer_channels == NULL) {
+ ERR("malloc returned NULL");
+ return 1;
+ }
+
+ CPRINTF("opening trace files");
+ for(i=0; i<trace->nr_channels; i++) {
+ char tmp[100];
+ struct ltt_channel_struct *chan = &trace->channels[i];
+
+ consumer_channels[i].chan = chan;
+
+ snprintf(tmp, sizeof(tmp), "trace/%s", chan->channel_name);
+ result = consumer_channels[i].fd = open(tmp, O_WRONLY | O_CREAT | O_TRUNC, 00644);
+ if(result == -1) {
+ perror("open");
+ return -1;
+ }
+ CPRINTF("\topened trace file %s", tmp);
+
+ }
+ CPRINTF("done opening trace files");
+
+ for(;;) {
+ /*wait*/
+
+ for(i=0; i<trace->nr_channels; i++) {
+ struct rchan *rchan = consumer_channels[i].chan->trans_channel_data;
+ struct rchan_buf *rbuf = rchan->buf;
+ struct ltt_channel_buf_struct *lttbuf = consumer_channels[i].chan->buf;
+ long consumed_old;
+
+ result = ltt_do_get_subbuf(rbuf, lttbuf, &consumed_old);
+ if(result < 0) {
+ CPRINTF("ltt_do_get_subbuf: error: %s", strerror(-result));
+ }
+ else {
+ CPRINTF("success!");
+
+ result = write(consumer_channels[i].fd, rbuf->buf_data + (consumed_old & (2 * 4096-1)), 4096);
+ ltt_do_put_subbuf(rbuf, lttbuf, consumed_old);
+ }
+ }
+
+ sleep(1);
+ }
+
+// CPRINTF("consumer: got a trace: %s with %d channels\n", trace_name, trace->nr_channels);
+//
+// struct ltt_channel_struct *chan = &trace->channels[0];
+//
+// CPRINTF("channel 1 (%s) active=%u", chan->channel_name, chan->active & 1);
+
+// struct rchan *rchan = chan->trans_channel_data;
+// struct rchan_buf *rbuf = rchan->buf;
+// struct ltt_channel_buf_struct *lttbuf = chan->buf;
+// long consumed_old;
+//
+// result = fd = open("trace.out", O_WRONLY | O_CREAT | O_TRUNC, 00644);
+// if(result == -1) {
+// perror("open");
+// return -1;
+// }
+
+// for(;;) {
+// write(STDOUT_FILENO, str, sizeof(str));
+//
+// result = ltt_do_get_subbuf(rbuf, lttbuf, &consumed_old);
+// if(result < 0) {
+// CPRINTF("ltt_do_get_subbuf: error: %s", strerror(-result));
+// }
+// else {
+// CPRINTF("success!");
+//
+// result = write(fd, rbuf->buf_data + (consumed_old & (2 * 4096-1)), 4096);
+// ltt_do_put_subbuf(rbuf, lttbuf, consumed_old);
+// }
+//
+// //CPRINTF("There seems to be %ld bytes available", SUBBUF_TRUNC(local_read(<tbuf->offset), rbuf->chan) - consumed_old);
+// CPRINTF("Commit count %ld", local_read(<tbuf->commit_count[0]));
+//
+//
+// sleep(1);
+// }
+}
+
+void start_consumer(void)
+{
+ int result;
+
+ result = clone(consumer, consumer_stack+sizeof(consumer_stack)-1, CLONE_FS | CLONE_FILES | CLONE_VM | CLONE_SIGHAND | CLONE_THREAD, NULL);
+ if(result == -1) {
+ perror("clone");
+ }
+}
void probe(const struct marker *mdata,
void *probe_private, void *call_private,
printf("In probe\n");
}
-//ust// void try_map()
-//ust// {
-//ust// char *m;
-//ust//
-//ust// /* maybe add MAP_LOCKED */
-//ust// m = mmap(NULL, 4096, PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE , -1, 0);
-//ust// if(m == (char*)-1) {
-//ust// perror("mmap");
-//ust// return;
-//ust// }
-//ust//
-//ust// printf("The mapping is at %p.\n", m);
-//ust// strcpy(m, "Hello, Mapping!");
-//ust// }
+void inthandler(int sig)
+{
+ printf("in handler\n");
+ exit(0);
+}
-int main()
+int init_int_handler(void)
{
int result;
+ struct sigaction act;
- init_ustrelay_transport();
-
- char trace_name[] = "theusttrace";
- char trace_type[] = "usttrace";
+ result = sigemptyset(&act.sa_mask);
+ if(result == -1) {
+ PERROR("sigemptyset");
+ return -1;
+ }
- marker_probe_register("abc", "testmark", "", probe, NULL);
- marker_probe_register("metadata", "core_marker_id", "channel %s name %s event_id %hu int #1u%zu long #1u%zu pointer #1u%zu size_t #1u%zu alignment #1u%u", probe, NULL);
+ act.sa_handler = inthandler;
+ act.sa_flags = SA_RESTART;
- result = ltt_trace_setup(trace_name);
- if(result < 0) {
- ERR("ltt_trace_setup failed");
- return 1;
+ /* Only defer ourselves. Also, try to restart interrupted
+ * syscalls to disturb the traced program as little as possible.
+ */
+ result = sigaction(SIGINT, &act, NULL);
+ if(result == -1) {
+ PERROR("sigaction");
+ return -1;
}
-//ust// result = ltt_trace_set_type(trace_name, trace_type);
-//ust// if(result < 0) {
-//ust// ERR("ltt_trace_set_type failed");
-//ust// return 1;
-//ust// }
+ return 0;
+}
- result = ltt_trace_alloc(trace_name);
- if(result < 0) {
- ERR("ltt_trace_alloc failed");
- return 1;
- }
+int main()
+{
+ int result;
+ int i;
-// try_map();
+ init_int_handler();
+ start_consumer();
printf("Hello, World!\n");
-
- trace_mark(abc, testmark, "", MARK_NOARGS);
+ sleep(1);
+ for(i=0; i<50; i++) {
+ trace_mark(ust, bar, "str %s", "FOOBAZ");
+ trace_mark(ust, bar2, "number1 %d number2 %d", 53, 9800);
+ usleep(100000);
+ }
scanf("%*s");
return 0;
}
+
+MARKER_LIB
projects / ust.git / blobdiff