Add preload_provider app
authorJonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Thu, 26 Oct 2017 15:13:38 +0000 (11:13 -0400)
committerJonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Thu, 26 Oct 2017 15:13:38 +0000 (11:13 -0400)
Shared object provider can be built and used independently of the app under
test.

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
lttng_ivc/apps/preload_provider/Makefile [new file with mode: 0644]
lttng_ivc/apps/preload_provider/app.c [new file with mode: 0644]
lttng_ivc/apps/preload_provider/tp.c [new file with mode: 0644]
lttng_ivc/apps/preload_provider/tp.h [new file with mode: 0644]
lttng_ivc/settings.py

diff --git a/lttng_ivc/apps/preload_provider/Makefile b/lttng_ivc/apps/preload_provider/Makefile
new file mode 100644 (file)
index 0000000..d92063c
--- /dev/null
@@ -0,0 +1,46 @@
+# Copyright (C) 2017  Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
+#
+# THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
+# OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
+#
+# Permission is hereby granted to use or copy this program for any
+# purpose,  provided the above notices are retained on all copies.
+# Permission to modify the code and to distribute modified code is
+# granted, provided the above notices are retained, and a notice that
+# the code was modified is included with the above copyright notice.
+
+PROVIDER_LIBS = -llttng-ust -ldl
+APP_LIBS = -ldl
+LOCAL_CPPFLAGS += -I.
+
+.PHONY: app provider app-enum provider-enum
+
+provider: libtp.so
+provider-enum: libtp-enum.so
+
+
+app: app.o
+       $(CC) -o $@ $(LDFLAGS) $(CFLAGS) $^ $(APP_LIBS)
+
+app.o: app.c
+       $(CC) $(CPPFLAGS) $(LOCAL_CPPFLAGS) $(CFLAGS) -c -o $@ $<
+
+libtp.so: tp.o
+       $(CC) $(CPPFLAGS) $(LOCAL_CPPFLAGS) $(CFLAGS) --shared -o $@ $< $(PROVIDER_LIBS) $(LDFLAGS)
+
+tp.o: tp.c
+       $(CC) $(CPPFLAGS) $(LOCAL_CPPFLAGS) $(CFLAGS) -fpic -c -o $@ $<
+
+app-enum: app-enum.o
+       $(CC) -o $@ $(LDFLAGS) $(CFLAGS) $^ $(APP_LIBS)
+
+app-enum.o: app.c
+       $(CC) $(CPPFLAGS) $(LOCAL_CPPFLAGS) $(CFLAGS) -DIVC_ENUM -c -o $@ $<
+
+libtp-enum.so: tp-enum.o
+       $(CC) $(CPPFLAGS) $(LOCAL_CPPFLAGS) $(CFLAGS) --shared -o $@ $< $(PROVIDER_LIBS) $(LDFLAGS)
+
+tp-enum.o: tp.c
+       $(CC) $(CPPFLAGS) $(LOCAL_CPPFLAGS) $(CFLAGS) -DIVC_ENUM -fpic -c -o $@ $<
+
+
diff --git a/lttng_ivc/apps/preload_provider/app.c b/lttng_ivc/apps/preload_provider/app.c
new file mode 100644 (file)
index 0000000..7da44d8
--- /dev/null
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) - 2012 David Goulet <dgoulet@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation; version 2.1 of the License.
+ *
+ * This library 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 Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <arpa/inet.h>
+#include <assert.h>
+#include <time.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#define TRACEPOINT_DEFINE
+#define TRACEPOINT_PROBE_DYNAMIC_LINKAGE
+#include "tp.h"
+
+#define NSEC_PER_USEC 1000
+#define NSEC_PER_SEC 1000000000
+
+static inline
+int64_t elapsed_time_ns(struct timespec *t1, struct timespec *t2)
+{
+       struct timespec delta;
+
+       assert(t1 && t2);
+       delta.tv_sec = t2->tv_sec - t1->tv_sec;
+       delta.tv_nsec = t2->tv_nsec - t1->tv_nsec;
+       return ((int64_t) NSEC_PER_SEC * (int64_t) delta.tv_sec) +
+                       (int64_t) delta.tv_nsec;
+}
+
+static inline
+int usleep_safe(useconds_t usec)
+{
+       int ret = 0;
+       struct timespec t1, t2;
+       int64_t time_remaining_ns = (int64_t) usec * (int64_t) NSEC_PER_USEC;
+
+       ret = clock_gettime(CLOCK_MONOTONIC, &t1);
+       if (ret) {
+               ret = -1;
+               perror("clock_gettime");
+               goto end;
+       }
+
+       while (time_remaining_ns > 0) {
+               ret = usleep(time_remaining_ns / (int64_t) NSEC_PER_USEC);
+               if (ret && errno != EINTR) {
+                       perror("usleep");
+                       goto end;
+               }
+
+               ret = clock_gettime(CLOCK_MONOTONIC, &t2);
+               if (ret) {
+                       perror("clock_gettime");
+                       goto end;
+               }
+
+               time_remaining_ns -= elapsed_time_ns(&t1, &t2);
+       }
+end:
+       return ret;
+}
+
+void create_file(const char *path)
+{
+       static bool file_created = false;
+       int ret;
+
+       if (!path || file_created) {
+               return;
+       }
+
+       ret = creat(path, S_IRWXU);
+       if (ret < 0) {
+               fprintf(stderr, "Failed to create file %s\n", path);
+               return;
+       }
+
+       (void) close(ret);
+       file_created = true;
+}
+
+static
+void wait_on_file(const char *path)
+{
+       if (!path) {
+               return;
+       }
+       for (;;) {
+               int ret;
+               struct stat buf;
+
+               ret = stat(path, &buf);
+               if (ret == -1 && errno == ENOENT) {
+                       (void) poll(NULL, 0, 10);       /* 10 ms delay */
+                       continue;                       /* retry */
+               }
+               if (ret) {
+                       perror("stat");
+                       exit(EXIT_FAILURE);
+               }
+               break;  /* found */
+       }
+}
+
+int main(int argc, char **argv)
+{
+       unsigned int i, netint;
+       long values[] = { 1, 2, 3 };
+       char text[10] = "test";
+       double dbl = 2.0;
+       float flt = 2222.0;
+       int nr_iter = 100, ret = 0;
+       useconds_t nr_usec = 0;
+       char *after_first_event_file_path = NULL;
+       char *before_last_event_file_path = NULL;
+
+       if (argc >= 2) {
+               /*
+                * If nr_iter is negative, do an infinite tracing loop.
+                */
+               nr_iter = atoi(argv[1]);
+       }
+
+       if (argc >= 3) {
+               /* By default, don't wait unless user specifies. */
+               nr_usec = atoi(argv[2]);
+       }
+
+       if (argc >= 4) {
+               after_first_event_file_path = argv[3];
+       }
+
+       if (argc >= 5) {
+               before_last_event_file_path = argv[4];
+       }
+
+       for (i = 0; nr_iter < 0 || i < nr_iter; i++) {
+               if (nr_iter >= 0 && i == nr_iter - 1) {
+                       /*
+                        * Wait on synchronization before writing last
+                        * event.
+                        */
+                       wait_on_file(before_last_event_file_path);
+               }
+               netint = htonl(i);
+               tracepoint(tp, tptest, i, netint, values, text,
+                       strlen(text), dbl, flt);
+               tracepoint(tp, tpenum, 1);
+
+               /*
+                * First loop we create the file if asked to indicate
+                * that at least one tracepoint has been hit.
+                */
+               create_file(after_first_event_file_path);
+               if (nr_usec) {
+                       if (usleep_safe(nr_usec)) {
+                               ret = -1;
+                               goto end;
+                       }
+               }
+       }
+
+end:
+       exit(!ret ? EXIT_SUCCESS : EXIT_FAILURE);
+}
diff --git a/lttng_ivc/apps/preload_provider/tp.c b/lttng_ivc/apps/preload_provider/tp.c
new file mode 100644 (file)
index 0000000..7f4fcd2
--- /dev/null
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) - 2012 David Goulet <dgoulet@efficios.com>
+ *
+ * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED OR
+ * IMPLIED. ANY USE IS AT YOUR OWN RISK.
+ *
+ * Permission is hereby granted to use or copy this program for any purpose,
+ * provided the above notices are retained on all copies.  Permission to modify
+ * the code and to distribute modified code is granted, provided the above
+ * notices are retained, and a notice that the code was modified is included
+ * with the above copyright notice.
+ */
+
+#define TRACEPOINT_CREATE_PROBES
+
+#include "tp.h"
diff --git a/lttng_ivc/apps/preload_provider/tp.h b/lttng_ivc/apps/preload_provider/tp.h
new file mode 100644 (file)
index 0000000..c9bba0a
--- /dev/null
@@ -0,0 +1,74 @@
+#undef TRACEPOINT_PROVIDER
+#define TRACEPOINT_PROVIDER tp
+
+#undef TRACEPOINT_INCLUDE
+#define TRACEPOINT_INCLUDE "./tp.h"
+
+#if !defined(_TP_H) || defined(TRACEPOINT_HEADER_MULTI_READ)
+#define _TP_H
+
+/*
+ * Copyright (C) 2011  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
+ * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
+ *
+ * Permission is hereby granted to use or copy this program
+ * for any purpose,  provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ */
+
+#include <lttng/tracepoint.h>
+
+#ifdef IVC_ENUM
+TRACEPOINT_ENUM(
+    tp,
+    tp_enum,
+    TP_ENUM_VALUES(
+        ctf_enum_value("ZERO", 0)
+        ctf_enum_value("ONE", 1)
+    )
+)
+
+TRACEPOINT_EVENT(tp, tpenum,
+       TP_ARGS(int, intarg),
+       TP_FIELDS(
+               ctf_enum(tp, tp_enum, int, enum_field, intarg)
+       )
+)
+#else
+TRACEPOINT_EVENT(tp, tpenum,
+               TP_ARGS(int, intarg),
+               TP_FIELDS(
+                       ctf_integer(int, intfield, intarg)
+               )
+)
+#endif
+
+TRACEPOINT_EVENT(tp, tptest,
+       TP_ARGS(int, anint, int, netint, long *, values,
+               char *, text, size_t, textlen,
+               double, doublearg, float, floatarg),
+       TP_FIELDS(
+               ctf_integer(int, intfield, anint)
+               ctf_integer_hex(int, intfield2, anint)
+               ctf_integer(long, longfield, anint)
+               ctf_integer_network(int, netintfield, netint)
+               ctf_integer_network_hex(int, netintfieldhex, netint)
+               ctf_array(long, arrfield1, values, 3)
+               ctf_array_text(char, arrfield2, text, 10)
+               ctf_sequence(char, seqfield1, text, size_t, textlen)
+               ctf_sequence_text(char, seqfield2, text, size_t, textlen)
+               ctf_string(stringfield, text)
+               ctf_float(float, floatfield, floatarg)
+               ctf_float(double, doublefield, doublearg)
+       )
+)
+
+
+#endif /* _TRACEPOINT_TP_H */
+
+/* This part must be outside ifdef protection */
+#include <lttng/tracepoint-event.h>
index a2a1b2fb7897e4837ed679293b72a9d57beb9597..adfa6b5493c363a15d4f6a694387f978cbf0792e 100644 (file)
@@ -11,6 +11,7 @@ git_remote_folder = os.path.dirname(os.path.abspath(__file__)) + "/runtime/git_r
 app_folder = os.path.dirname(os.path.abspath(__file__)) + "/runtime/git_remote"
 apps_folder = os.path.dirname(os.path.abspath(__file__)) + "/apps"
 apps_gen_events_folder = os.path.join(apps_folder, "gen_ust_events")
+apps_preload_provider_folder = os.path.join(apps_folder, "preload_provider")
 
 tmp_object_prefix = "lttng-ivc-"
 
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