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s3:lib/asys: measure async request syscall duration

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This uses time functions from lib/util/ which requires pulling in
samba-util. This sucks, but there's just no way of rewrapping a minimal
time utility library without modifying the public samba-util.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This commit is contained in:
Ralph Boehme 2016-02-25 08:06:00 +01:00 committed by Jeremy Allison
parent 9892809233
commit 0ea6a070c4
3 changed files with 15 additions and 1 deletions
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13
source3/lib/asys/asys.c
View File

@ -20,6 +20,7 @@
#include <stdlib.h>
#include <errno.h>
#include "../pthreadpool/pthreadpool.h"
#include "lib/util/time.h"
struct asys_pwrite_args {
int fildes;
@ -52,6 +53,8 @@ struct asys_job {
int err;
char busy;
char canceled;
struct timespec start_time;
struct timespec end_time;
};
struct asys_context {
@ -189,7 +192,10 @@ static void asys_pwrite_do(void *private_data)
struct asys_job *job = (struct asys_job *)private_data;
struct asys_pwrite_args *args = &job->args.pwrite_args;
clock_gettime_mono(&job->start_time);
job->ret = pwrite(args->fildes, args->buf, args->nbyte, args->offset);
clock_gettime_mono(&job->end_time);
if (job->ret == -1) {
job->err = errno;
}
@ -231,7 +237,10 @@ static void asys_pread_do(void *private_data)
struct asys_job *job = (struct asys_job *)private_data;
struct asys_pread_args *args = &job->args.pread_args;
clock_gettime_mono(&job->start_time);
job->ret = pread(args->fildes, args->buf, args->nbyte, args->offset);
clock_gettime_mono(&job->end_time);
if (job->ret == -1) {
job->err = errno;
}
@ -269,7 +278,10 @@ static void asys_fsync_do(void *private_data)
struct asys_job *job = (struct asys_job *)private_data;
struct asys_fsync_args *args = &job->args.fsync_args;
clock_gettime_mono(&job->start_time);
job->ret = fsync(args->fildes);
clock_gettime_mono(&job->end_time);
if (job->ret == -1) {
job->err = errno;
}
@ -320,6 +332,7 @@ int asys_results(struct asys_context *ctx, struct asys_result *results,
result->err = job->err;
}
result->private_data = job->private_data;
result->duration = nsec_time_diff(&job->end_time, &job->start_time);
job->busy = 0;
}

1
source3/lib/asys/asys.h
View File

@ -108,6 +108,7 @@ struct asys_result {
ssize_t ret;
int err;
void *private_data;
uint64_t duration; /* nanoseconds */
};
/**

2
source3/lib/asys/wscript_build
View File

@ -2,7 +2,7 @@
bld.SAMBA3_SUBSYSTEM('LIBASYS',
source='asys.c',
deps='PTHREADPOOL')
deps='PTHREADPOOL samba-util')
bld.SAMBA3_BINARY('asystest',
source='tests.c',