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qsp: Simplify how qsp_report() prints

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qsp_report() takes an fprintf()-like callback and a FILE * to pass to
it.

Its only caller hmp_sync_profile() passes monitor_fprintf() and the
current monitor cast to FILE *.  monitor_fprintf() casts it right
back, and is otherwise identical to monitor_printf().  The
type-punning is ugly.

Drop the callback, and call qemu_printf() instead.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20190417191805.28198-7-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2019-04-17 21:17:54 +02:00
parent 76c8661595
commit ac7ff4cf5f
4 changed files with 15 additions and 15 deletions
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1
include/block/qapi.h
View File

@ -27,6 +27,7 @@
#include "block/block.h"
#include "block/snapshot.h"
#include "qemu/fprintf-fn.h"
BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk,
BlockDriverState *bs, Error **errp);

6
include/qemu/qsp.h
View File

@ -11,15 +11,13 @@
#ifndef QEMU_QSP_H
#define QEMU_QSP_H
#include "qemu/fprintf-fn.h"
enum QSPSortBy {
QSP_SORT_BY_TOTAL_WAIT_TIME,
QSP_SORT_BY_AVG_WAIT_TIME,
};
void qsp_report(FILE *f, fprintf_function cpu_fprintf, size_t max,
enum QSPSortBy sort_by, bool callsite_coalesce);
void qsp_report(size_t max, enum QSPSortBy sort_by,
bool callsite_coalesce);
bool qsp_is_enabled(void);
void qsp_enable(void);

2
monitor.c
View File

@ -1336,7 +1336,7 @@ static void hmp_info_sync_profile(Monitor *mon, const QDict *qdict)
enum QSPSortBy sort_by;
sort_by = mean ? QSP_SORT_BY_AVG_WAIT_TIME : QSP_SORT_BY_TOTAL_WAIT_TIME;
qsp_report((FILE *)mon, monitor_fprintf, max, sort_by, coalesce);
qsp_report(max, sort_by, coalesce);
}
static void hmp_info_history(Monitor *mon, const QDict *qdict)

21
util/qsp.c
View File

@ -56,7 +56,9 @@
* Critical-Section Execution to Improve the Performance of Multithreaded
* Applications", USENIX ATC'12.
*/
#include "qemu/osdep.h"
#include "qemu/qemu-print.h"
#include "qemu/thread.h"
#include "qemu/timer.h"
#include "qemu/qht.h"
@ -678,8 +680,7 @@ static gboolean qsp_tree_report(gpointer key, gpointer value, gpointer udata)
return FALSE;
}
static void
pr_report(const QSPReport *rep, FILE *f, fprintf_function pr)
static void pr_report(const QSPReport *rep)
{
char *dashes;
size_t max_len = 0;
@ -702,15 +703,15 @@ pr_report(const QSPReport *rep, FILE *f, fprintf_function pr)
/* white space to leave to the right of "Call site" */
callsite_rspace = callsite_len - strlen("Call site");
pr(f, "Type Object Call site%*s Wait Time (s) "
" Count Average (us)\n", callsite_rspace, "");
qemu_printf("Type Object Call site%*s Wait Time (s) "
" Count Average (us)\n", callsite_rspace, "");
/* build a horizontal rule with dashes */
n_dashes = 79 + callsite_rspace;
dashes = g_malloc(n_dashes + 1);
memset(dashes, '-', n_dashes);
dashes[n_dashes] = '\0';
pr(f, "%s\n", dashes);
qemu_printf("%s\n", dashes);
for (i = 0; i < rep->n_entries; i++) {
const QSPReportEntry *e = &rep->entries[i];
@ -726,11 +727,11 @@ pr_report(const QSPReport *rep, FILE *f, fprintf_function pr)
e->callsite_at,
callsite_len - (int)strlen(e->callsite_at), "",
e->time_s, e->n_acqs, e->ns_avg * 1e-3);
pr(f, "%s", s->str);
qemu_printf("%s", s->str);
g_string_free(s, TRUE);
}
pr(f, "%s\n", dashes);
qemu_printf("%s\n", dashes);
g_free(dashes);
}
@ -746,8 +747,8 @@ static void report_destroy(QSPReport *rep)
g_free(rep->entries);
}
void qsp_report(FILE *f, fprintf_function cpu_fprintf, size_t max,
enum QSPSortBy sort_by, bool callsite_coalesce)
void qsp_report(size_t max, enum QSPSortBy sort_by,
bool callsite_coalesce)
{
GTree *tree = g_tree_new_full(qsp_tree_cmp, &sort_by, g_free, NULL);
QSPReport rep;
@ -762,7 +763,7 @@ void qsp_report(FILE *f, fprintf_function cpu_fprintf, size_t max,
g_tree_foreach(tree, qsp_tree_report, &rep);
g_tree_destroy(tree);
pr_report(&rep, f, cpu_fprintf);
pr_report(&rep);
report_destroy(&rep);
}