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trace: use glib atomic int types 

Juan reported that RHEL 6.4 hosts give compiler warnings because we use
unsigned int while glib prototypes use volatile gint in trace/simple.c.

  trace/simple.c:223: error: pointer targets in passing argument 1 of 'g_atomic_int_compare_and_exchange' differ in signedness

These variables are only accessed with glib atomic int functions so
let's play it by the book and use volatile gint.

Reported-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1360676045-9204-2-git-send-email-stefanha@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Stefan Hajnoczi 2013-02-12 14:34:04 +01:00 committed by Anthony Liguori
parent 03ec2f8308
commit 30d940875d
1 changed files with 3 additions and 3 deletions
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6
trace/simple.c
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@ -51,9 +51,9 @@ enum {
};
uint8_t trace_buf[TRACE_BUF_LEN];
static unsigned int trace_idx;
static volatile gint trace_idx;
static unsigned int writeout_idx;
static int dropped_events;
static volatile gint dropped_events;
static FILE *trace_fp;
static char *trace_file_name;
@ -267,7 +267,7 @@ void trace_record_finish(TraceBufferRecord *rec)
record.event |= TRACE_RECORD_VALID;
write_to_buffer(rec->tbuf_idx, &record, sizeof(TraceRecord));
if ((g_atomic_int_get(&trace_idx) - writeout_idx)
if (((unsigned int)g_atomic_int_get(&trace_idx) - writeout_idx)
> TRACE_BUF_FLUSH_THRESHOLD) {
flush_trace_file(false);
}