180712ee8dc19c61371673668300d2ad9321cea7
2 * lttng-clock-override-test.c
4 * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
5 * Copyright (C) 2015 Jonthan Rajotte <jonathan.rajotte-julien@efficios.com>
7 * SPDX-License-Identifier: MIT
9 * Based on lttng-clock-override-example.c from LTTng-ust example
13 #include <common/compat/time.hpp>
15 #include <lttng/lttng-export.h>
16 #include <lttng/ust-clock.h>
22 static uint64_t plugin_read64(void)
28 static uint64_t plugin_freq(void)
30 return 1000; /* 1KHz clock (very coarse!) */
33 static int plugin_uuid(char *uuid
)
35 const char myuuid
[] = "83c63deb-7aa4-48fb-abda-946f400d76e6";
36 memcpy(uuid
, myuuid
, LTTNG_UST_UUID_STR_LEN
);
40 static const char *plugin_name(void)
42 return "lttng_test_clock_override";
45 static const char *plugin_description(void)
47 return "Freeze time with 1KHz for regression test";
50 LTTNG_EXPORT
void lttng_ust_clock_plugin_init(void);
51 void lttng_ust_clock_plugin_init(void)
55 ret
= lttng_ust_trace_clock_set_read64_cb(plugin_read64
);
58 "Error setting clock override read64 callback: %s\n",
62 ret
= lttng_ust_trace_clock_set_freq_cb(plugin_freq
);
64 fprintf(stderr
, "Error setting clock override freq callback: %s\n", strerror(-ret
));
67 ret
= lttng_ust_trace_clock_set_uuid_cb(plugin_uuid
);
69 fprintf(stderr
, "Error setting clock override uuid callback: %s\n", strerror(-ret
));
73 ret
= lttng_ust_trace_clock_set_name_cb(plugin_name
);
75 fprintf(stderr
, "Error setting clock override name callback: %s\n", strerror(-ret
));
79 ret
= lttng_ust_trace_clock_set_description_cb(plugin_description
);
82 "Error setting clock override description callback: %s\n",
87 ret
= lttng_ust_enable_trace_clock_override();
89 fprintf(stderr
, "Error enabling clock override: %s\n", strerror(-ret
));
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