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/*
* Message Passing Benchmarks
*/
#undef NDEBUG
#include <c-stdaux.h>
#include <math.h>
#include <stdlib.h>
#include "util/metrics.h"
#include "util-broker.h"
#include "util-message.h"
#include "dbus/protocol.h"
#define TEST_N_ITERATIONS 500
static void test_connect_blocking_fd(Broker *broker, int *fdp) {
_c_cleanup_(c_closep) int fd = -1;
_c_cleanup_(c_freep) void *hello = NULL;
size_t n_hello = 0;
uint8_t reply[316];
ssize_t len;
int r;
test_message_append_sasl(&hello, &n_hello);
test_message_append_hello(&hello, &n_hello);
fd = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0);
c_assert(fd >= 0);
r = connect(fd, (struct sockaddr *)&broker->address, broker->n_address);
c_assert(r >= 0);
len = write(fd, hello, n_hello);
c_assert(len == (ssize_t)n_hello);
len = recv(fd, reply, sizeof(reply), MSG_WAITALL);
c_assert(len == (ssize_t)sizeof(reply));
*fdp = fd;
fd = -1;
}
static void test_message_transaction(Metrics *metrics, size_t n_matches, size_t n_replies, void *input, ssize_t n_input, ssize_t n_output) {
_c_cleanup_(util_broker_freep) Broker *broker = NULL;
_c_cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
_c_cleanup_(c_closep) int fd1 = -1;
_c_cleanup_(c_closep) int fd2 = -1;
uint8_t output[n_output];
ssize_t len;
int r;
util_broker_new(&broker);
util_broker_spawn(broker);
util_broker_settle(broker);
test_connect_blocking_fd(broker, &fd1);
if (n_matches > 0) {
util_broker_connect(broker, &bus);
for (unsigned int i = 0; i < n_matches; ++i) {
_c_cleanup_(c_freep) char *match = NULL;
r = asprintf(&match, "path=/org/example/Foo%u", i);
c_assert(r >= 0);
r = sd_bus_call_method(bus, "org.freedesktop.DBus", "/org/freedesktop/DBus", "org.freedesktop.DBus",
"AddMatch", NULL, NULL,
"s", match);
c_assert(r >= 0);
}
}
if (n_replies > 0) {
uint32_t serial = 0;;
test_connect_blocking_fd(broker, &fd2);
for (unsigned int i = 0; i < n_replies; ++i) {
_c_cleanup_(c_freep) void *ping = NULL;
size_t n_ping = 0;
uint8_t reply[136];
test_message_append_ping(&ping, &n_ping, ++serial, 2, 2);
len = write(fd2, ping, n_ping);
c_assert(len == (ssize_t)n_ping);
r = recv(fd2, reply, sizeof(reply), MSG_WAITALL);
c_assert(r == sizeof(reply));
}
}
for (unsigned int i = 0; i < TEST_N_ITERATIONS; ++i) {
metrics_sample_start(metrics);
len = write(fd1, input, n_input);
c_assert(len == (ssize_t)n_input);
len = recv(fd1, output, sizeof(output), MSG_WAITALL);
c_assert(len == (ssize_t)sizeof(output));
metrics_sample_end(metrics);
}
util_broker_terminate(broker);
}
static void test_broadcast(void) {
for (unsigned int j = 0; j <= 18; ++j) {
_c_cleanup_(metrics_deinit) Metrics metrics = METRICS_INIT(CLOCK_MONOTONIC_RAW);
_c_cleanup_(c_freep) void *buf = NULL;
size_t n_buf = 0;
test_message_append_broadcast(&buf, &n_buf, 1);
test_message_append_signal(&buf, &n_buf, 1, 1);
test_message_transaction(&metrics, 1 << j, 0, buf, n_buf, 120);
fprintf(stderr, "Broadcast emmission to %u failing matches + message transaction completed in %"PRIu64" (+/- %.0f) us\n",
1 << j, metrics.average / 1000, metrics_read_standard_deviation(&metrics) / 1000);
}
}
static void test_replies(void) {
for (unsigned int j = 0; j <= 18; ++j) {
_c_cleanup_(metrics_deinit) Metrics metrics = METRICS_INIT(CLOCK_MONOTONIC_RAW);
_c_cleanup_(c_freep) void *buf = NULL;
size_t n_buf = 0;
test_message_append_ping(&buf, &n_buf, 1, 1, 1);
test_message_append_pong(&buf, &n_buf, 2, 1, 1, 1);
test_message_transaction(&metrics, 0, 1 << j, buf, n_buf, n_buf);
fprintf(stderr, "Message transaction with %u outstanding replies on the bus completed in %"PRIu64" (+/- %.0f) us\n",
1 << j, metrics.average / 1000, metrics_read_standard_deviation(&metrics) / 1000);
}
}
static void test_pipelining(void) {
for (unsigned int j = 0; j <= 8; ++j) {
_c_cleanup_(metrics_deinit) Metrics metrics = METRICS_INIT(CLOCK_MONOTONIC_RAW);
_c_cleanup_(c_freep) void *buf = NULL;
size_t n_buf = 0;
uint32_t serial = 0;
for (unsigned int i = 0; i <= (1U << j); ++i) {
test_message_append_ping(&buf, &n_buf, ++serial, 1, 1);
}
test_message_transaction(&metrics, 0, 0, buf, n_buf, n_buf);
fprintf(stderr, "%u pipelined message transaction completed in %"PRIu64" (+/- %.0f) us\n",
(1 << j), metrics.average / 1000 / (1 << j), metrics_read_standard_deviation(&metrics) / 1000);
}
}
int main(int argc, char **argv) {
test_broadcast();
test_replies();
test_pipelining();
}
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