| /* |
| * Copyright (c) 2014, The Linux Foundation. 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 The Linux Foundation 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 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NON-INFRINGEMENT 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 <stdarg.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <utils/constants.h> |
| |
| #include "dump_impl.h" |
| |
| namespace sdm { |
| |
| DumpImpl* DumpImpl::dump_list_[] = { 0 }; |
| uint32_t DumpImpl::dump_count_ = 0; |
| |
| DisplayError DumpInterface::GetDump(char *buffer, uint32_t length) { |
| if (!buffer || !length) { |
| return kErrorParameters; |
| } |
| |
| buffer[0] = '\0'; |
| DumpImpl::AppendString(buffer, length, "\n-------- Snapdragon Display Manager --------"); |
| for (uint32_t i = 0; i < DumpImpl::dump_count_; i++) { |
| DumpImpl::dump_list_[i]->AppendDump(buffer, length); |
| } |
| DumpImpl::AppendString(buffer, length, "\n\n"); |
| |
| return kErrorNone; |
| } |
| |
| DumpImpl::DumpImpl() { |
| Register(this); |
| } |
| |
| DumpImpl::~DumpImpl() { |
| Unregister(this); |
| } |
| |
| void DumpImpl::AppendString(char *buffer, uint32_t length, const char *format, ...) { |
| uint32_t filled = UINT32(strlen(buffer)); |
| if (filled >= length) { |
| return; |
| } |
| buffer += filled; |
| |
| va_list list; |
| va_start(list, format); |
| vsnprintf(buffer, length - filled, format, list); |
| } |
| |
| // Every object is created or destroyed through display core only, which itself protects the |
| // the access, so no need to protect registration or de-registration. |
| void DumpImpl::Register(DumpImpl *dump_impl) { |
| if (dump_count_ < kMaxDumpObjects) { |
| dump_list_[dump_count_] = dump_impl; |
| dump_count_++; |
| } |
| } |
| |
| void DumpImpl::Unregister(DumpImpl *dump_impl) { |
| for (uint32_t i = 0; i < dump_count_; i++) { |
| if (dump_list_[i] == dump_impl) { |
| dump_count_--; |
| for (; i < dump_count_; i++) { |
| dump_list_[i] = dump_list_[i + 1]; |
| } |
| } |
| } |
| } |
| |
| } // namespace sdm |
| |