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-rw-r--r--include/input/InputTransport.h13
-rw-r--r--libs/input/InputTransport.cpp106
-rw-r--r--libs/input/tests/StructLayout_test.cpp3
-rw-r--r--services/surfaceflinger/RenderEngine/ProgramCache.cpp2
-rw-r--r--services/surfaceflinger/SurfaceFlinger.cpp10
-rw-r--r--services/surfaceflinger/SurfaceTracing.cpp46
-rw-r--r--services/surfaceflinger/SurfaceTracing.h9
7 files changed, 169 insertions, 20 deletions
diff --git a/include/input/InputTransport.h b/include/input/InputTransport.h
index 1ea2c2cc07..ecdc075ac8 100644
--- a/include/input/InputTransport.h
+++ b/include/input/InputTransport.h
@@ -41,6 +41,13 @@ namespace android {
*
* Note that this structure is used for IPCs so its layout must be identical
* on 64 and 32 bit processes. This is tested in StructLayout_test.cpp.
+ *
+ * Since the struct must be aligned to an 8-byte boundary, there could be uninitialized bytes
+ * in-between the defined fields. This padding data should be explicitly accounted for by adding
+ * "empty" fields into the struct. This data is memset to zero before sending the struct across
+ * the socket. Adding the explicit fields ensures that the memset is not optimized away by the
+ * compiler. When a new field is added to the struct, the corresponding change
+ * in StructLayout_test should be made.
*/
struct InputMessage {
enum {
@@ -61,6 +68,7 @@ struct InputMessage {
union Body {
struct Key {
uint32_t seq;
+ uint32_t empty1;
nsecs_t eventTime __attribute__((aligned(8)));
int32_t deviceId;
int32_t source;
@@ -71,6 +79,7 @@ struct InputMessage {
int32_t scanCode;
int32_t metaState;
int32_t repeatCount;
+ uint32_t empty2;
nsecs_t downTime __attribute__((aligned(8)));
inline size_t size() const {
@@ -80,6 +89,7 @@ struct InputMessage {
struct Motion {
uint32_t seq;
+ uint32_t empty1;
nsecs_t eventTime __attribute__((aligned(8)));
int32_t deviceId;
int32_t source;
@@ -90,12 +100,14 @@ struct InputMessage {
int32_t metaState;
int32_t buttonState;
int32_t edgeFlags;
+ uint32_t empty2;
nsecs_t downTime __attribute__((aligned(8)));
float xOffset;
float yOffset;
float xPrecision;
float yPrecision;
uint32_t pointerCount;
+ uint32_t empty3;
// Note that PointerCoords requires 8 byte alignment.
struct Pointer {
PointerProperties properties;
@@ -126,6 +138,7 @@ struct InputMessage {
bool isValid(size_t actualSize) const;
size_t size() const;
+ void getSanitizedCopy(InputMessage* msg) const;
};
/*
diff --git a/libs/input/InputTransport.cpp b/libs/input/InputTransport.cpp
index aa0bf17ca3..03f593f8b2 100644
--- a/libs/input/InputTransport.cpp
+++ b/libs/input/InputTransport.cpp
@@ -96,6 +96,106 @@ size_t InputMessage::size() const {
return sizeof(Header);
}
+/**
+ * There could be non-zero bytes in-between InputMessage fields. Force-initialize the entire
+ * memory to zero, then only copy the valid bytes on a per-field basis.
+ */
+void InputMessage::getSanitizedCopy(InputMessage* msg) const {
+ memset(msg, 0, sizeof(*msg));
+
+ // Write the header
+ msg->header.type = header.type;
+
+ // Write the body
+ switch(header.type) {
+ case InputMessage::TYPE_KEY: {
+ // uint32_t seq
+ msg->body.key.seq = body.key.seq;
+ // nsecs_t eventTime
+ msg->body.key.eventTime = body.key.eventTime;
+ // int32_t deviceId
+ msg->body.key.deviceId = body.key.deviceId;
+ // int32_t source
+ msg->body.key.source = body.key.source;
+ // int32_t displayId
+ msg->body.key.displayId = body.key.displayId;
+ // int32_t action
+ msg->body.key.action = body.key.action;
+ // int32_t flags
+ msg->body.key.flags = body.key.flags;
+ // int32_t keyCode
+ msg->body.key.keyCode = body.key.keyCode;
+ // int32_t scanCode
+ msg->body.key.scanCode = body.key.scanCode;
+ // int32_t metaState
+ msg->body.key.metaState = body.key.metaState;
+ // int32_t repeatCount
+ msg->body.key.repeatCount = body.key.repeatCount;
+ // nsecs_t downTime
+ msg->body.key.downTime = body.key.downTime;
+ break;
+ }
+ case InputMessage::TYPE_MOTION: {
+ // uint32_t seq
+ msg->body.motion.seq = body.motion.seq;
+ // nsecs_t eventTime
+ msg->body.motion.eventTime = body.motion.eventTime;
+ // int32_t deviceId
+ msg->body.motion.deviceId = body.motion.deviceId;
+ // int32_t source
+ msg->body.motion.source = body.motion.source;
+ // int32_t displayId
+ msg->body.motion.displayId = body.motion.displayId;
+ // int32_t action
+ msg->body.motion.action = body.motion.action;
+ // int32_t actionButton
+ msg->body.motion.actionButton = body.motion.actionButton;
+ // int32_t flags
+ msg->body.motion.flags = body.motion.flags;
+ // int32_t metaState
+ msg->body.motion.metaState = body.motion.metaState;
+ // int32_t buttonState
+ msg->body.motion.buttonState = body.motion.buttonState;
+ // int32_t edgeFlags
+ msg->body.motion.edgeFlags = body.motion.edgeFlags;
+ // nsecs_t downTime
+ msg->body.motion.downTime = body.motion.downTime;
+ // float xOffset
+ msg->body.motion.xOffset = body.motion.xOffset;
+ // float yOffset
+ msg->body.motion.yOffset = body.motion.yOffset;
+ // float xPrecision
+ msg->body.motion.xPrecision = body.motion.xPrecision;
+ // float yPrecision
+ msg->body.motion.yPrecision = body.motion.yPrecision;
+ // uint32_t pointerCount
+ msg->body.motion.pointerCount = body.motion.pointerCount;
+ //struct Pointer pointers[MAX_POINTERS]
+ for (size_t i = 0; i < body.motion.pointerCount; i++) {
+ // PointerProperties properties
+ msg->body.motion.pointers[i].properties.id = body.motion.pointers[i].properties.id;
+ msg->body.motion.pointers[i].properties.toolType =
+ body.motion.pointers[i].properties.toolType,
+ // PointerCoords coords
+ msg->body.motion.pointers[i].coords.bits = body.motion.pointers[i].coords.bits;
+ const uint32_t count = BitSet64::count(body.motion.pointers[i].coords.bits);
+ memcpy(&msg->body.motion.pointers[i].coords.values[0],
+ &body.motion.pointers[i].coords.values[0],
+ count * (sizeof(body.motion.pointers[i].coords.values[0])));
+ }
+ break;
+ }
+ case InputMessage::TYPE_FINISHED: {
+ msg->body.finished.seq = body.finished.seq;
+ msg->body.finished.handled = body.finished.handled;
+ break;
+ }
+ default: {
+ LOG_FATAL("Unexpected message type %i", header.type);
+ break;
+ }
+ }
+}
// --- InputChannel ---
@@ -149,10 +249,12 @@ status_t InputChannel::openInputChannelPair(const std::string& name,
}
status_t InputChannel::sendMessage(const InputMessage* msg) {
- size_t msgLength = msg->size();
+ const size_t msgLength = msg->size();
+ InputMessage cleanMsg;
+ msg->getSanitizedCopy(&cleanMsg);
ssize_t nWrite;
do {
- nWrite = ::send(mFd, msg, msgLength, MSG_DONTWAIT | MSG_NOSIGNAL);
+ nWrite = ::send(mFd, &cleanMsg, msgLength, MSG_DONTWAIT | MSG_NOSIGNAL);
} while (nWrite == -1 && errno == EINTR);
if (nWrite < 0) {
diff --git a/libs/input/tests/StructLayout_test.cpp b/libs/input/tests/StructLayout_test.cpp
index d19f3b8066..12a67828ac 100644
--- a/libs/input/tests/StructLayout_test.cpp
+++ b/libs/input/tests/StructLayout_test.cpp
@@ -65,6 +65,9 @@ void TestInputMessageAlignment() {
CHECK_OFFSET(InputMessage::Body::Motion, yPrecision, 76);
CHECK_OFFSET(InputMessage::Body::Motion, pointerCount, 80);
CHECK_OFFSET(InputMessage::Body::Motion, pointers, 88);
+
+ CHECK_OFFSET(InputMessage::Body::Finished, seq, 0);
+ CHECK_OFFSET(InputMessage::Body::Finished, handled, 4);
}
} // namespace android
diff --git a/services/surfaceflinger/RenderEngine/ProgramCache.cpp b/services/surfaceflinger/RenderEngine/ProgramCache.cpp
index fe992f13b6..2073b05453 100644
--- a/services/surfaceflinger/RenderEngine/ProgramCache.cpp
+++ b/services/surfaceflinger/RenderEngine/ProgramCache.cpp
@@ -220,7 +220,7 @@ void ProgramCache::generateEOTF(Formatter& fs, const Key& needs) {
const highp float c2 = (2413.0 / 4096.0) * 32.0;
const highp float c3 = (2392.0 / 4096.0) * 32.0;
- highp vec3 tmp = pow(color, 1.0 / vec3(m2));
+ highp vec3 tmp = pow(clamp(color, 0.0, 1.0), 1.0 / vec3(m2));
tmp = max(tmp - c1, 0.0) / (c2 - c3 * tmp);
return pow(tmp, 1.0 / vec3(m1));
}
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index e693dd28dd..82bf19f12f 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -4433,6 +4433,12 @@ void SurfaceFlinger::dumpAllLocked(const Vector<String16>& args, size_t& index,
result.append("\n");
/*
+ * Tracing state
+ */
+ mTracing.dump(result);
+ result.append("\n");
+
+ /*
* HWC layer minidump
*/
for (size_t d = 0; d < mDisplays.size(); d++) {
@@ -4779,12 +4785,12 @@ status_t SurfaceFlinger::onTransact(
case 1025: { // Set layer tracing
n = data.readInt32();
if (n) {
- ALOGV("LayerTracing enabled");
+ ALOGD("LayerTracing enabled");
mTracing.enable();
doTracing("tracing.enable");
reply->writeInt32(NO_ERROR);
} else {
- ALOGV("LayerTracing disabled");
+ ALOGD("LayerTracing disabled");
status_t err = mTracing.disable();
reply->writeInt32(err);
}
diff --git a/services/surfaceflinger/SurfaceTracing.cpp b/services/surfaceflinger/SurfaceTracing.cpp
index f8c466ea19..67dcd06187 100644
--- a/services/surfaceflinger/SurfaceTracing.cpp
+++ b/services/surfaceflinger/SurfaceTracing.cpp
@@ -27,52 +27,67 @@
namespace android {
void SurfaceTracing::enable() {
+ ATRACE_CALL();
+ std::lock_guard<std::mutex> protoGuard(mTraceMutex);
+
if (mEnabled) {
return;
}
- ATRACE_CALL();
mEnabled = true;
- std::lock_guard<std::mutex> protoGuard(mTraceMutex);
- mTrace.set_magic_number(uint64_t(LayersTraceFileProto_MagicNumber_MAGIC_NUMBER_H) << 32 |
- LayersTraceFileProto_MagicNumber_MAGIC_NUMBER_L);
+ mTrace = std::make_unique<LayersTraceFileProto>();
+ mTrace->set_magic_number(uint64_t(LayersTraceFileProto_MagicNumber_MAGIC_NUMBER_H) << 32 |
+ LayersTraceFileProto_MagicNumber_MAGIC_NUMBER_L);
}
status_t SurfaceTracing::disable() {
+ ATRACE_CALL();
+ std::lock_guard<std::mutex> protoGuard(mTraceMutex);
+
if (!mEnabled) {
return NO_ERROR;
}
- ATRACE_CALL();
- std::lock_guard<std::mutex> protoGuard(mTraceMutex);
mEnabled = false;
status_t err(writeProtoFileLocked());
ALOGE_IF(err == PERMISSION_DENIED, "Could not save the proto file! Permission denied");
ALOGE_IF(err == NOT_ENOUGH_DATA, "Could not save the proto file! There are missing fields");
- mTrace.Clear();
+ mTrace.reset();
return err;
}
-bool SurfaceTracing::isEnabled() {
+bool SurfaceTracing::isEnabled() const {
+ std::lock_guard<std::mutex> protoGuard(mTraceMutex);
return mEnabled;
}
void SurfaceTracing::traceLayers(const char* where, LayersProto layers) {
std::lock_guard<std::mutex> protoGuard(mTraceMutex);
-
- LayersTraceProto* entry = mTrace.add_entry();
+ if (!mEnabled) {
+ return;
+ }
+ LayersTraceProto* entry = mTrace->add_entry();
entry->set_elapsed_realtime_nanos(elapsedRealtimeNano());
entry->set_where(where);
entry->mutable_layers()->Swap(&layers);
+
+ constexpr int maxBufferedEntryCount = 3600;
+ if (mTrace->entry_size() >= maxBufferedEntryCount) {
+ // TODO: flush buffered entries without disabling tracing
+ ALOGE("too many buffered frames; force disable tracing");
+ mEnabled = false;
+ writeProtoFileLocked();
+ mTrace.reset();
+ }
}
status_t SurfaceTracing::writeProtoFileLocked() {
ATRACE_CALL();
- if (!mTrace.IsInitialized()) {
+ if (!mTrace->IsInitialized()) {
return NOT_ENOUGH_DATA;
}
std::string output;
- if (!mTrace.SerializeToString(&output)) {
+ if (!mTrace->SerializeToString(&output)) {
return PERMISSION_DENIED;
}
if (!android::base::WriteStringToFile(output, mOutputFileName, true)) {
@@ -82,4 +97,11 @@ status_t SurfaceTracing::writeProtoFileLocked() {
return NO_ERROR;
}
+void SurfaceTracing::dump(String8& result) const {
+ std::lock_guard<std::mutex> protoGuard(mTraceMutex);
+
+ result.appendFormat("Tracing state: %s\n", mEnabled ? "enabled" : "disabled");
+ result.appendFormat(" number of entries: %d\n", mTrace ? mTrace->entry_size() : 0);
+}
+
} // namespace android
diff --git a/services/surfaceflinger/SurfaceTracing.h b/services/surfaceflinger/SurfaceTracing.h
index 590ab9680f..fd8cb82a9b 100644
--- a/services/surfaceflinger/SurfaceTracing.h
+++ b/services/surfaceflinger/SurfaceTracing.h
@@ -18,7 +18,9 @@
#include <layerproto/LayerProtoHeader.h>
#include <utils/Errors.h>
+#include <utils/String8.h>
+#include <memory>
#include <mutex>
using namespace android::surfaceflinger;
@@ -32,9 +34,10 @@ class SurfaceTracing {
public:
void enable();
status_t disable();
- bool isEnabled();
+ bool isEnabled() const;
void traceLayers(const char* where, LayersProto);
+ void dump(String8& result) const;
private:
static constexpr auto DEFAULT_FILENAME = "/data/misc/wmtrace/layers_trace.pb";
@@ -43,8 +46,8 @@ private:
bool mEnabled = false;
std::string mOutputFileName = DEFAULT_FILENAME;
- std::mutex mTraceMutex;
- LayersTraceFileProto mTrace;
+ mutable std::mutex mTraceMutex;
+ std::unique_ptr<LayersTraceFileProto> mTrace;
};
} // namespace android
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-11-01 16:55:11 +0000