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[Qemu-devel] [RISU PATCH v5 10/13] risu: handle trace through stdin/stdo
From: |
Alex Bennée |
Subject: |
[Qemu-devel] [RISU PATCH v5 10/13] risu: handle trace through stdin/stdout |
Date: |
Mon, 19 Jun 2017 11:46:52 +0100 |
Trace files can get quite large so it would be useful to be able to
just capture the trace stream with stdin/stdout for processing in a
pipe line. The sort of case where this is useful is for building
static binaries where zlib support is missing for whatever reason.
It can also be used in testing pipelines.
Signed-off-by: Alex Bennée <address@hidden>
---
risu.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/risu.c b/risu.c
index 93c274b..e94b54b 100644
--- a/risu.c
+++ b/risu.c
@@ -312,7 +312,11 @@ int main(int argc, char **argv)
if (ismaster) {
if (trace) {
- master_fd = open(trace_fn, O_WRONLY|O_CREAT, S_IRWXU);
+ if (strncmp(trace_fn, "-", strlen(trace_fn))==0) {
+ master_fd = fileno(stdout);
+ } else {
+ master_fd = open(trace_fn, O_WRONLY|O_CREAT, S_IRWXU);
+ }
} else {
fprintf(stderr, "master port %d\n", port);
master_fd = master_connect(port);
@@ -320,7 +324,11 @@ int main(int argc, char **argv)
return master();
} else {
if (trace) {
- apprentice_fd = open(trace_fn, O_RDONLY);
+ if (strncmp(trace_fn, "-", strlen(trace_fn))==0) {
+ apprentice_fd = fileno(stdin);
+ } else {
+ apprentice_fd = open(trace_fn, O_RDONLY);
+ }
} else {
fprintf(stderr, "apprentice host %s port %d\n", hostname, port);
apprentice_fd = apprentice_connect(hostname, port);
--
2.13.0
- [Qemu-devel] [RISU PATCH v5 05/13] build-all-archs: support cross building via docker, (continued)
- [Qemu-devel] [RISU PATCH v5 05/13] build-all-archs: support cross building via docker, Alex Bennée, 2017/06/19
- [Qemu-devel] [RISU PATCH v5 07/13] risu: paramterise send/receive functions, Alex Bennée, 2017/06/19
- [Qemu-devel] [RISU PATCH v5 06/13] risu: a bit more verbosity when starting, Alex Bennée, 2017/06/19
- [Qemu-devel] [RISU PATCH v5 08/13] risu: add header to trace stream, Alex Bennée, 2017/06/19
- [Qemu-devel] [RISU PATCH v5 10/13] risu: handle trace through stdin/stdout,
Alex Bennée <=
- [Qemu-devel] [RISU PATCH v5 03/13] all: fix up code consitency, Alex Bennée, 2017/06/19
- [Qemu-devel] [RISU PATCH v5 09/13] risu: add simple trace and replay support, Alex Bennée, 2017/06/19
- [Qemu-devel] [RISU PATCH v5 13/13] new: run_risu.sh script, Alex Bennée, 2017/06/19