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-rw-r--r--src/openvpn/perf.c358
1 files changed, 193 insertions, 165 deletions
diff --git a/src/openvpn/perf.c b/src/openvpn/perf.c
index 910d171..51e051a 100644
--- a/src/openvpn/perf.c
+++ b/src/openvpn/perf.c
@@ -5,7 +5,7 @@
* packet encryption, packet authentication, and
* packet compression.
*
- * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ * Copyright (C) 2002-2017 OpenVPN Technologies, Inc. <sales@openvpn.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
@@ -40,260 +40,288 @@
#include "memdbg.h"
static const char *metric_names[] = {
- "PERF_BIO_READ_PLAINTEXT",
- "PERF_BIO_WRITE_PLAINTEXT",
- "PERF_BIO_READ_CIPHERTEXT",
- "PERF_BIO_WRITE_CIPHERTEXT",
- "PERF_TLS_MULTI_PROCESS",
- "PERF_IO_WAIT",
- "PERF_EVENT_LOOP",
- "PERF_MULTI_CREATE_INSTANCE",
- "PERF_MULTI_CLOSE_INSTANCE",
- "PERF_MULTI_SHOW_STATS",
- "PERF_MULTI_BCAST",
- "PERF_MULTI_MCAST",
- "PERF_SCRIPT",
- "PERF_READ_IN_LINK",
- "PERF_PROC_IN_LINK",
- "PERF_READ_IN_TUN",
- "PERF_PROC_IN_TUN",
- "PERF_PROC_OUT_LINK",
- "PERF_PROC_OUT_TUN",
- "PERF_PROC_OUT_TUN_MTCP"
+ "PERF_BIO_READ_PLAINTEXT",
+ "PERF_BIO_WRITE_PLAINTEXT",
+ "PERF_BIO_READ_CIPHERTEXT",
+ "PERF_BIO_WRITE_CIPHERTEXT",
+ "PERF_TLS_MULTI_PROCESS",
+ "PERF_IO_WAIT",
+ "PERF_EVENT_LOOP",
+ "PERF_MULTI_CREATE_INSTANCE",
+ "PERF_MULTI_CLOSE_INSTANCE",
+ "PERF_MULTI_SHOW_STATS",
+ "PERF_MULTI_BCAST",
+ "PERF_MULTI_MCAST",
+ "PERF_SCRIPT",
+ "PERF_READ_IN_LINK",
+ "PERF_PROC_IN_LINK",
+ "PERF_READ_IN_TUN",
+ "PERF_PROC_IN_TUN",
+ "PERF_PROC_OUT_LINK",
+ "PERF_PROC_OUT_TUN",
+ "PERF_PROC_OUT_TUN_MTCP"
};
struct perf
{
-# define PS_INITIAL 0
-# define PS_METER_RUNNING 1
-# define PS_METER_INTERRUPTED 2
- int state;
-
- struct timeval start;
- double sofar;
- double sum;
- double max;
- double count;
+#define PS_INITIAL 0
+#define PS_METER_RUNNING 1
+#define PS_METER_INTERRUPTED 2
+ int state;
+
+ struct timeval start;
+ double sofar;
+ double sum;
+ double max;
+ double count;
};
struct perf_set
{
- int stack_len;
- int stack[STACK_N];
- struct perf perf[PERF_N];
+ int stack_len;
+ int stack[STACK_N];
+ struct perf perf[PERF_N];
};
static struct perf_set perf_set;
-static void perf_print_state (int lev);
+static void perf_print_state(int lev);
static inline int
-get_stack_index (int sdelta)
+get_stack_index(int sdelta)
{
- const int sindex = perf_set.stack_len + sdelta;
- if (sindex >= 0 && sindex < STACK_N)
- return sindex;
- else
- return -1;
+ const int sindex = perf_set.stack_len + sdelta;
+ if (sindex >= 0 && sindex < STACK_N)
+ {
+ return sindex;
+ }
+ else
+ {
+ return -1;
+ }
}
static int
-get_perf_index (int sdelta)
+get_perf_index(int sdelta)
{
- const int sindex = get_stack_index (sdelta);
- if (sindex >= 0)
+ const int sindex = get_stack_index(sdelta);
+ if (sindex >= 0)
{
- const int pindex = perf_set.stack[sindex];
- if (pindex >= 0 && pindex < PERF_N)
- return pindex;
- else
- return -1;
+ const int pindex = perf_set.stack[sindex];
+ if (pindex >= 0 && pindex < PERF_N)
+ {
+ return pindex;
+ }
+ else
+ {
+ return -1;
+ }
+ }
+ else
+ {
+ return -1;
}
- else
- return -1;
}
static struct perf *
-get_perf (int sdelta)
+get_perf(int sdelta)
{
- const int pindex = get_perf_index (sdelta);
- if (pindex >= 0)
- return &perf_set.perf[pindex];
- else
- return NULL;
+ const int pindex = get_perf_index(sdelta);
+ if (pindex >= 0)
+ {
+ return &perf_set.perf[pindex];
+ }
+ else
+ {
+ return NULL;
+ }
}
static void
-push_perf_index (int pindex)
+push_perf_index(int pindex)
{
- const int sindex = get_stack_index (0);
- const int newlen = get_stack_index (1);
- if (sindex >= 0 && newlen >= 0
- && pindex >= 0 && pindex < PERF_N)
+ const int sindex = get_stack_index(0);
+ const int newlen = get_stack_index(1);
+ if (sindex >= 0 && newlen >= 0
+ && pindex >= 0 && pindex < PERF_N)
{
- int i;
- for (i = 0; i < sindex; ++i)
- if (perf_set.stack[i] == pindex)
- {
- perf_print_state (M_INFO);
- msg (M_FATAL, "PERF: push_perf_index %s failed",
- metric_names [pindex]);
- }
-
- perf_set.stack[sindex] = pindex;
- perf_set.stack_len = newlen;
+ int i;
+ for (i = 0; i < sindex; ++i)
+ if (perf_set.stack[i] == pindex)
+ {
+ perf_print_state(M_INFO);
+ msg(M_FATAL, "PERF: push_perf_index %s failed",
+ metric_names [pindex]);
+ }
+
+ perf_set.stack[sindex] = pindex;
+ perf_set.stack_len = newlen;
+ }
+ else
+ {
+ msg(M_FATAL, "PERF: push_perf_index: stack push error");
}
- else
- msg (M_FATAL, "PERF: push_perf_index: stack push error");
}
static void
-pop_perf_index (void)
+pop_perf_index(void)
{
- const int newlen = get_stack_index (-1);
- if (newlen >= 0)
+ const int newlen = get_stack_index(-1);
+ if (newlen >= 0)
{
- perf_set.stack_len = newlen;
+ perf_set.stack_len = newlen;
+ }
+ else
+ {
+ msg(M_FATAL, "PERF: pop_perf_index: stack pop error");
}
- else
- msg (M_FATAL, "PERF: pop_perf_index: stack pop error");
}
static void
-state_must_be (const struct perf *p, const int wanted)
+state_must_be(const struct perf *p, const int wanted)
{
- if (p->state != wanted)
- msg (M_FATAL, "PERF: bad state actual=%d wanted=%d",
- p->state,
- wanted);
+ if (p->state != wanted)
+ {
+ msg(M_FATAL, "PERF: bad state actual=%d wanted=%d",
+ p->state,
+ wanted);
+ }
}
static void
-update_sofar (struct perf *p)
+update_sofar(struct perf *p)
{
- struct timeval current;
- ASSERT (!gettimeofday (&current, NULL));
- p->sofar += (double) tv_subtract (&current, &p->start, 600) / 1000000.0;
- tv_clear (&p->start);
+ struct timeval current;
+ ASSERT(!gettimeofday(&current, NULL));
+ p->sofar += (double) tv_subtract(&current, &p->start, 600) / 1000000.0;
+ tv_clear(&p->start);
}
static void
-perf_start (struct perf *p)
+perf_start(struct perf *p)
{
- state_must_be (p, PS_INITIAL);
- ASSERT (!gettimeofday (&p->start, NULL));
- p->sofar = 0.0;
- p->state = PS_METER_RUNNING;
+ state_must_be(p, PS_INITIAL);
+ ASSERT(!gettimeofday(&p->start, NULL));
+ p->sofar = 0.0;
+ p->state = PS_METER_RUNNING;
}
static void
-perf_stop (struct perf *p)
+perf_stop(struct perf *p)
{
- state_must_be (p, PS_METER_RUNNING);
- update_sofar (p);
- p->sum += p->sofar;
- if (p->sofar > p->max)
- p->max = p->sofar;
- p->count += 1.0;
- p->sofar = 0.0;
- p->state = PS_INITIAL;
+ state_must_be(p, PS_METER_RUNNING);
+ update_sofar(p);
+ p->sum += p->sofar;
+ if (p->sofar > p->max)
+ {
+ p->max = p->sofar;
+ }
+ p->count += 1.0;
+ p->sofar = 0.0;
+ p->state = PS_INITIAL;
}
static void
-perf_interrupt (struct perf *p)
+perf_interrupt(struct perf *p)
{
- state_must_be (p, PS_METER_RUNNING);
- update_sofar (p);
- p->state = PS_METER_INTERRUPTED;
+ state_must_be(p, PS_METER_RUNNING);
+ update_sofar(p);
+ p->state = PS_METER_INTERRUPTED;
}
static void
-perf_resume (struct perf *p)
+perf_resume(struct perf *p)
{
- state_must_be (p, PS_METER_INTERRUPTED);
- ASSERT (!gettimeofday (&p->start, NULL));
- p->state = PS_METER_RUNNING;
+ state_must_be(p, PS_METER_INTERRUPTED);
+ ASSERT(!gettimeofday(&p->start, NULL));
+ p->state = PS_METER_RUNNING;
}
void
-perf_push (int type)
+perf_push(int type)
{
- struct perf *prev;
- struct perf *cur;
+ struct perf *prev;
+ struct perf *cur;
- ASSERT (SIZE(metric_names) == PERF_N);
- push_perf_index (type);
+ ASSERT(SIZE(metric_names) == PERF_N);
+ push_perf_index(type);
- prev = get_perf (-2);
- cur = get_perf (-1);
+ prev = get_perf(-2);
+ cur = get_perf(-1);
- ASSERT (cur);
+ ASSERT(cur);
- if (prev)
- perf_interrupt (prev);
- perf_start (cur);
+ if (prev)
+ {
+ perf_interrupt(prev);
+ }
+ perf_start(cur);
}
void
-perf_pop (void)
+perf_pop(void)
{
- struct perf *prev;
- struct perf *cur;
+ struct perf *prev;
+ struct perf *cur;
- prev = get_perf (-2);
- cur = get_perf (-1);
+ prev = get_perf(-2);
+ cur = get_perf(-1);
- ASSERT (cur);
- perf_stop (cur);
+ ASSERT(cur);
+ perf_stop(cur);
- if (prev)
- perf_resume (prev);
+ if (prev)
+ {
+ perf_resume(prev);
+ }
- pop_perf_index ();
+ pop_perf_index();
}
void
-perf_output_results (void)
+perf_output_results(void)
{
- int i;
- msg (M_INFO, "LATENCY PROFILE (mean and max are in milliseconds)");
- for (i = 0; i < PERF_N; ++i)
+ int i;
+ msg(M_INFO, "LATENCY PROFILE (mean and max are in milliseconds)");
+ for (i = 0; i < PERF_N; ++i)
{
- struct perf *p = &perf_set.perf[i];
- if (p->count > 0.0)
- {
- const double mean = p->sum / p->count;
- msg (M_INFO, "%s n=%.0f mean=%.3f max=%.3f", metric_names[i], p->count, mean*1000.0, p->max*1000.0);
- }
+ struct perf *p = &perf_set.perf[i];
+ if (p->count > 0.0)
+ {
+ const double mean = p->sum / p->count;
+ msg(M_INFO, "%s n=%.0f mean=%.3f max=%.3f", metric_names[i], p->count, mean*1000.0, p->max*1000.0);
+ }
}
}
static void
-perf_print_state (int lev)
+perf_print_state(int lev)
{
- struct gc_arena gc = gc_new ();
- int i;
- msg (lev, "PERF STATE");
- msg (lev, "Stack:");
- for (i = 0; i < perf_set.stack_len; ++i)
+ struct gc_arena gc = gc_new();
+ int i;
+ msg(lev, "PERF STATE");
+ msg(lev, "Stack:");
+ for (i = 0; i < perf_set.stack_len; ++i)
{
- const int j = perf_set.stack[i];
- const struct perf *p = &perf_set.perf[j];
- msg (lev, "[%d] %s state=%d start=%s sofar=%f sum=%f max=%f count=%f",
- i,
- metric_names[j],
- p->state,
- tv_string (&p->start, &gc),
- p->sofar,
- p->sum,
- p->max,
- p->count);
+ const int j = perf_set.stack[i];
+ const struct perf *p = &perf_set.perf[j];
+ msg(lev, "[%d] %s state=%d start=%s sofar=%f sum=%f max=%f count=%f",
+ i,
+ metric_names[j],
+ p->state,
+ tv_string(&p->start, &gc),
+ p->sofar,
+ p->sum,
+ p->max,
+ p->count);
}
- gc_free (&gc);
+ gc_free(&gc);
}
-#else
+#else /* ifdef ENABLE_PERFORMANCE_METRICS */
#ifdef _MSC_VER /* Dummy function needed to avoid empty file compiler warning in Microsoft VC */
-static void dummy(void) {}
-#endif
+static void
+dummy(void) {
+}
#endif
+#endif /* ifdef ENABLE_PERFORMANCE_METRICS */
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