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authorGravatar David Garcia Quintas <dgq@google.com>2016-03-17 22:42:39 -0700
committerGravatar David Garcia Quintas <dgq@google.com>2016-03-17 22:42:39 -0700
commit185768b7024504bdb94d3b5448c7ddffc31a5151 (patch)
treed46d1aafaf1c65b673bf038287c26d72b8d6f027 /src/cpp/common/core_codegen.cc
parent3c5def57f65ac92a94f4a78f58fde9ed52aa8e1c (diff)
parentd848db1c06123d23888c705530fc012bcc7e9f35 (diff)
Merge branch 'master' of github.com:grpc/grpc into guard_check
Diffstat (limited to 'src/cpp/common/core_codegen.cc')
-rw-r--r--src/cpp/common/core_codegen.cc256
1 files changed, 256 insertions, 0 deletions
diff --git a/src/cpp/common/core_codegen.cc b/src/cpp/common/core_codegen.cc
new file mode 100644
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+++ b/src/cpp/common/core_codegen.cc
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+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/cpp/common/core_codegen.h"
+
+#include <stdlib.h>
+
+#include <grpc++/support/config.h>
+#include <grpc/byte_buffer.h>
+#include <grpc/byte_buffer_reader.h>
+#include <grpc/grpc.h>
+#include <grpc/impl/codegen/alloc.h>
+#include <grpc/impl/codegen/byte_buffer.h>
+#include <grpc/impl/codegen/log.h>
+#include <grpc/support/port_platform.h>
+#include <grpc/support/slice.h>
+#include <grpc/support/slice_buffer.h>
+
+#include "src/core/profiling/timers.h"
+
+namespace {
+
+const int kGrpcBufferWriterMaxBufferLength = 8192;
+
+class GrpcBufferWriter GRPC_FINAL
+ : public ::grpc::protobuf::io::ZeroCopyOutputStream {
+ public:
+ explicit GrpcBufferWriter(grpc_byte_buffer** bp, int block_size)
+ : block_size_(block_size), byte_count_(0), have_backup_(false) {
+ *bp = grpc_raw_byte_buffer_create(NULL, 0);
+ slice_buffer_ = &(*bp)->data.raw.slice_buffer;
+ }
+
+ ~GrpcBufferWriter() GRPC_OVERRIDE {
+ if (have_backup_) {
+ gpr_slice_unref(backup_slice_);
+ }
+ }
+
+ bool Next(void** data, int* size) GRPC_OVERRIDE {
+ if (have_backup_) {
+ slice_ = backup_slice_;
+ have_backup_ = false;
+ } else {
+ slice_ = gpr_slice_malloc(block_size_);
+ }
+ *data = GPR_SLICE_START_PTR(slice_);
+ // On win x64, int is only 32bit
+ GPR_ASSERT(GPR_SLICE_LENGTH(slice_) <= INT_MAX);
+ byte_count_ += * size = (int)GPR_SLICE_LENGTH(slice_);
+ gpr_slice_buffer_add(slice_buffer_, slice_);
+ return true;
+ }
+
+ void BackUp(int count) GRPC_OVERRIDE {
+ gpr_slice_buffer_pop(slice_buffer_);
+ if (count == block_size_) {
+ backup_slice_ = slice_;
+ } else {
+ backup_slice_ =
+ gpr_slice_split_tail(&slice_, GPR_SLICE_LENGTH(slice_) - count);
+ gpr_slice_buffer_add(slice_buffer_, slice_);
+ }
+ have_backup_ = true;
+ byte_count_ -= count;
+ }
+
+ grpc::protobuf::int64 ByteCount() const GRPC_OVERRIDE { return byte_count_; }
+
+ private:
+ const int block_size_;
+ int64_t byte_count_;
+ gpr_slice_buffer* slice_buffer_;
+ bool have_backup_;
+ gpr_slice backup_slice_;
+ gpr_slice slice_;
+};
+
+class GrpcBufferReader GRPC_FINAL
+ : public ::grpc::protobuf::io::ZeroCopyInputStream {
+ public:
+ explicit GrpcBufferReader(grpc_byte_buffer* buffer)
+ : byte_count_(0), backup_count_(0) {
+ grpc_byte_buffer_reader_init(&reader_, buffer);
+ }
+ ~GrpcBufferReader() GRPC_OVERRIDE {
+ grpc_byte_buffer_reader_destroy(&reader_);
+ }
+
+ bool Next(const void** data, int* size) GRPC_OVERRIDE {
+ if (backup_count_ > 0) {
+ *data = GPR_SLICE_START_PTR(slice_) + GPR_SLICE_LENGTH(slice_) -
+ backup_count_;
+ GPR_ASSERT(backup_count_ <= INT_MAX);
+ *size = (int)backup_count_;
+ backup_count_ = 0;
+ return true;
+ }
+ if (!grpc_byte_buffer_reader_next(&reader_, &slice_)) {
+ return false;
+ }
+ gpr_slice_unref(slice_);
+ *data = GPR_SLICE_START_PTR(slice_);
+ // On win x64, int is only 32bit
+ GPR_ASSERT(GPR_SLICE_LENGTH(slice_) <= INT_MAX);
+ byte_count_ += * size = (int)GPR_SLICE_LENGTH(slice_);
+ return true;
+ }
+
+ void BackUp(int count) GRPC_OVERRIDE { backup_count_ = count; }
+
+ bool Skip(int count) GRPC_OVERRIDE {
+ const void* data;
+ int size;
+ while (Next(&data, &size)) {
+ if (size >= count) {
+ BackUp(size - count);
+ return true;
+ }
+ // size < count;
+ count -= size;
+ }
+ // error or we have too large count;
+ return false;
+ }
+
+ grpc::protobuf::int64 ByteCount() const GRPC_OVERRIDE {
+ return byte_count_ - backup_count_;
+ }
+
+ private:
+ int64_t byte_count_;
+ int64_t backup_count_;
+ grpc_byte_buffer_reader reader_;
+ gpr_slice slice_;
+};
+} // namespace
+
+namespace grpc {
+
+grpc_completion_queue* CoreCodegen::grpc_completion_queue_create(
+ void* reserved) {
+ return ::grpc_completion_queue_create(reserved);
+}
+
+void CoreCodegen::grpc_completion_queue_destroy(grpc_completion_queue* cq) {
+ ::grpc_completion_queue_destroy(cq);
+}
+
+grpc_event CoreCodegen::grpc_completion_queue_pluck(grpc_completion_queue* cq,
+ void* tag,
+ gpr_timespec deadline,
+ void* reserved) {
+ return ::grpc_completion_queue_pluck(cq, tag, deadline, reserved);
+}
+
+void* CoreCodegen::gpr_malloc(size_t size) { return ::gpr_malloc(size); }
+
+void CoreCodegen::gpr_free(void* p) { return ::gpr_free(p); }
+
+void CoreCodegen::grpc_byte_buffer_destroy(grpc_byte_buffer* bb) {
+ ::grpc_byte_buffer_destroy(bb);
+}
+
+void CoreCodegen::grpc_metadata_array_init(grpc_metadata_array* array) {
+ ::grpc_metadata_array_init(array);
+}
+
+void CoreCodegen::grpc_metadata_array_destroy(grpc_metadata_array* array) {
+ ::grpc_metadata_array_destroy(array);
+}
+
+gpr_timespec CoreCodegen::gpr_inf_future(gpr_clock_type type) {
+ return ::gpr_inf_future(type);
+}
+
+void CoreCodegen::assert_fail(const char* failed_assertion) {
+ gpr_log(GPR_ERROR, "assertion failed: %s", failed_assertion);
+ abort();
+}
+
+Status CoreCodegen::SerializeProto(const grpc::protobuf::Message& msg,
+ grpc_byte_buffer** bp) {
+ GPR_TIMER_SCOPE("SerializeProto", 0);
+ int byte_size = msg.ByteSize();
+ if (byte_size <= kGrpcBufferWriterMaxBufferLength) {
+ gpr_slice slice = gpr_slice_malloc(byte_size);
+ GPR_ASSERT(GPR_SLICE_END_PTR(slice) ==
+ msg.SerializeWithCachedSizesToArray(GPR_SLICE_START_PTR(slice)));
+ *bp = grpc_raw_byte_buffer_create(&slice, 1);
+ gpr_slice_unref(slice);
+ return Status::OK;
+ } else {
+ GrpcBufferWriter writer(bp, kGrpcBufferWriterMaxBufferLength);
+ return msg.SerializeToZeroCopyStream(&writer)
+ ? Status::OK
+ : Status(StatusCode::INTERNAL, "Failed to serialize message");
+ }
+}
+
+Status CoreCodegen::DeserializeProto(grpc_byte_buffer* buffer,
+ grpc::protobuf::Message* msg,
+ int max_message_size) {
+ GPR_TIMER_SCOPE("DeserializeProto", 0);
+ if (buffer == nullptr) {
+ return Status(StatusCode::INTERNAL, "No payload");
+ }
+ Status result = Status::OK;
+ {
+ GrpcBufferReader reader(buffer);
+ ::grpc::protobuf::io::CodedInputStream decoder(&reader);
+ if (max_message_size > 0) {
+ decoder.SetTotalBytesLimit(max_message_size, max_message_size);
+ }
+ if (!msg->ParseFromCodedStream(&decoder)) {
+ result = Status(StatusCode::INTERNAL, msg->InitializationErrorString());
+ }
+ if (!decoder.ConsumedEntireMessage()) {
+ result = Status(StatusCode::INTERNAL, "Did not read entire message");
+ }
+ }
+ grpc_byte_buffer_destroy(buffer);
+ return result;
+}
+
+} // namespace grpc