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libcamera: request: Add tracepoints

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Add and use tracepoints in Request. Requests are core to libcamera
operation, thus detecting delays in their processing is important, and
serves as a good usage example of tracepoints.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Paul Elder 2020-10-28 19:10:27 +09:00
parent fcc6d4bd76
commit 27c9d6eceb
6 changed files with 130 additions and 0 deletions
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11
src/libcamera/request.cpp
View file

@ -16,6 +16,7 @@
#include "libcamera/internal/camera_controls.h"
#include "libcamera/internal/log.h"
#include "libcamera/internal/tracepoints.h"
/**
* \file request.h
@ -85,10 +86,14 @@ Request::Request(Camera *camera, uint64_t cookie)
* \todo: Add a validator for metadata controls.
*/
metadata_ = new ControlList(controls::controls);
LIBCAMERA_TRACEPOINT(request_construct, this);
}
Request::~Request()
{
LIBCAMERA_TRACEPOINT(request_destroy, this);
delete metadata_;
delete controls_;
delete validator_;
@ -106,6 +111,8 @@ Request::~Request()
*/
void Request::reuse(ReuseFlag flags)
{
LIBCAMERA_TRACEPOINT(request_reuse, this);
pending_.clear();
if (flags & ReuseBuffers) {
for (auto pair : bufferMap_) {
@ -259,6 +266,8 @@ void Request::complete()
LOG(Request, Debug)
<< "Request has completed - cookie: " << cookie_
<< (cancelled_ ? " [Cancelled]" : "");
LIBCAMERA_TRACEPOINT(request_complete, this);
}
/**
@ -276,6 +285,8 @@ void Request::complete()
*/
bool Request::completeBuffer(FrameBuffer *buffer)
{
LIBCAMERA_TRACEPOINT(request_complete_buffer, this, buffer);
int ret = pending_.erase(buffer);
ASSERT(ret == 1);