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shmem node: copy samples when reading

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This commit is contained in:
Georg Reinke 2017-05-12 11:36:23 +02:00
parent 4bffe387a9
commit 1067c66ab8
1 changed files with 10 additions and 3 deletions
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13
lib/nodes/shmem.c
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@ -33,6 +33,7 @@
#include "nodes/shmem.h"
#include "plugin.h"
#include "shmem.h"
#include "timing.h"
#include "utils.h"
int shmem_parse(struct node *n, config_setting_t *cfg)
@ -159,8 +160,9 @@ int shmem_read(struct node *n, struct sample *smps[], unsigned cnt)
int ret, recv;
recv = shm->polling ? queue_pull_many(&shm->shared->in.q, (void**) smps, cnt)
: queue_signalled_pull_many(&shm->shared->in.qs, (void**) smps, cnt);
struct sample *shared_smps[cnt];
recv = shm->polling ? queue_pull_many(&shm->shared->in.q, (void**) shared_smps, cnt)
: queue_signalled_pull_many(&shm->shared->in.qs, (void**) shared_smps, cnt);
if (recv <= 0)
return recv;
@ -168,8 +170,13 @@ int shmem_read(struct node *n, struct sample *smps[], unsigned cnt)
/* Check if remote process is still running */
ret = atomic_load_explicit(&shm->shared->ext_stopped, memory_order_relaxed);
if (ret)
return ret;
return -1;
sample_copy_many(smps, shared_smps, recv);
sample_put_many(shared_smps, recv);
struct timespec ts_recv = time_now();
for (int i = 0; i < recv; i++)
smps[i]->ts.received = ts_recv;
return recv;
}