TcpConnection::~TcpConnection()
{
LOG_INFO("TcpConnection::~TcpConnection(),[%0x] [%d][%0x][%0x]", this, socket_->fd(), socket_, channel_);
ZL_ASSERT(state_ == kDisconnected)(state_);
Safe_Delete(socket_);
Safe_Delete(channel_);
}
GLuint CreateShaderOfType(GLenum type, GLsizei count, const char*const* shader_src)
{
GLuint shader;
GLint compiled;
shader = glCreateShader(type); //Create the shader object
if (shader == 0) return 0;
#if defined(ZILLALOG)
//Format the source code for debugging purposes
ZL_String src, indent;
for (GLsizei i = 0, justnl = 1, bracket_level = 0; i < count; i++, justnl = 1)
for (const char *p = shader_src[i]; *p; p++)
if (justnl && *p <= ' ') { } //skip whitespaces after newline
else if (*p == '{') { src << '\n' << indent << '{' << '\n' << indent << '\t'; indent += '\t'; justnl = 1; }
else if (*p == '}') { if (!indent.empty()) { indent.resize(indent.size()-1); if (justnl && src.size()) src.resize(src.size()-1); }src << '}' << '\n' << indent; justnl = 1; }
else if (*p == '\n') { src << '\n' << indent; justnl = 1; }
else if (*p == ';' && !bracket_level) { src << ';' << '\n' << indent; justnl = 1; }
else { if (*p == '(') bracket_level++; else if (*p == ')') bracket_level--; src << *p; justnl = 0; }
const char* psrc = src.c_str();
shader_src = &psrc;
count = 1;
#endif
//Load and compile the shader source
glShaderSource(shader, count, (const GLchar**)shader_src, NULL);
glCompileShader(shader);
//Check the compile status
glGetShaderiv(shader, GL_COMPILE_STATUS, &compiled);
if (compiled == 0)
{
#if defined(ZILLALOG)
GLint info_len = 0;
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &info_len);
if (info_len > 1)
{
char* info_log = reinterpret_cast<char*>(malloc(sizeof(char) * info_len));
glGetShaderInfoLog(shader, info_len, NULL, info_log);
ZL_LOG1("ZLGLSL", "Error compiling shader: %s", info_log);
ZL_LOG0("ZLGLSL", "Shader Source:");
int i = 1; for (const char *lb = src.c_str(), *le; (le = strchr(lb, '\n')); lb = le+1) { ZL_LOG3("ZLGLSL", "%3d: %.*s", i++, le-lb, lb); }
free(info_log);
ZL_ASSERT(false);
}
#endif
glDeleteShader(shader);
return 0;
}
#if defined(ZILLALOG) && (0||ZL_GLSL_OUTPUT_ALL_SHADER_SOURCE)
ZL_LOG0("ZLGLSL", "---------------------------------------------");
ZL_LOG0("ZLGLSL", "Shader Source:");
int i = 1; for (const char *lb = src.c_str(), *le; (le = strchr(lb, '\n')); lb = le+1) { ZL_LOG3("ZLGLSL", "%3d: %.*s", i++, le-lb, lb); }
ZL_LOG0("ZLGLSL", "---------------------------------------------");
#endif
return shader;
}
void TcpConnection::connectEstablished()
{
loop_->assertInLoopThread();
ZL_ASSERT(state_ == kConnecting)(state_);
setState(kConnected);
channel_->enableReading();
TcpConnectionPtr sp_this(shared_from_this());
connectionCallback_(sp_this);
}
void TcpConnection::handleClose()
{
loop_->assertInLoopThread();
ZL_ASSERT(state_ == kConnected || state_ == kDisconnecting)(state_)(socket_->fd());
setState(kDisconnected);
channel_->disableAll();
connectionCallback_(shared_from_this());
closeCallback_(shared_from_this());
}
void TcpConnection::connectEstablished()
{
LOG_INFO("TcpConnection::connectEstablished fd = %d, state = %s", socket_->fd(), getState(state_));
loop_->assertInLoopThread();
ZL_ASSERT(state_ == kConnecting)(state_);
setState(kConnected);
channel_->enableReading();
TcpConnectionPtr sp_this(shared_from_this());
connectionCallback_(sp_this);
}
GLuint CreateProgramFromVertexAndFragmentShaders(GLsizei vertex_shader_srcs_count, const char*const* vertex_shader_srcs, GLsizei fragment_shader_srcs_count, const char*const* fragment_shader_srcs, GLsizei bind_attribs_count, const char*const* bind_attribs)
{
GLuint vertex_shader;
GLuint fragment_shader;
GLuint program_object;
GLint linked;
// Load the vertex/fragment shaders
if (!(vertex_shader = CreateShaderOfType(GL_VERTEX_SHADER, vertex_shader_srcs_count, vertex_shader_srcs))) return 0;
if (!(fragment_shader = CreateShaderOfType(GL_FRAGMENT_SHADER, fragment_shader_srcs_count, fragment_shader_srcs))) { glDeleteShader(vertex_shader); return 0; }
// Create the program object and attach the shaders.
if (!(program_object = glCreateProgram())) { glDeleteShader(vertex_shader); glDeleteShader(fragment_shader); return 0; }
glAttachShader(program_object, vertex_shader);
glAttachShader(program_object, fragment_shader);
//attribute bound to index 0 must always be an enabled array attribute - so force position to it
for (GLsizei i = 0; i < bind_attribs_count; i++) glBindAttribLocation(program_object, i, bind_attribs[i]);
// Link the program
glLinkProgram(program_object);
// Check the link status
glGetProgramiv(program_object, GL_LINK_STATUS, &linked);
if (linked == 0)
{
#if defined(ZILLALOG)
GLint info_len = 0;
glGetProgramiv(program_object, GL_INFO_LOG_LENGTH, &info_len);
if (info_len > 1)
{
char* info_log = reinterpret_cast<char*>(malloc(info_len));
glGetProgramInfoLog(program_object, info_len, NULL, info_log);
ZL_LOG1("ZLGLSL", "Error linking program: %s", info_log);
for (GLsizei vi = 0; vi < vertex_shader_srcs_count; vi++) { ZL_LOG2("ZLGLSL", " VERTEX SHADER #%d: %s", vi, vertex_shader_srcs[vi]); }
for (GLsizei fi = 0; fi < fragment_shader_srcs_count; fi++) { ZL_LOG2("ZLGLSL", " FRAGMENT SHADER #%d: %s", fi, fragment_shader_srcs[fi]); }
free(info_log);
ZL_ASSERT(false);
}
#endif
glDeleteProgram(program_object);
return 0;
}
#ifndef ZILLALOG
// Detach and delete these here because they are linked into the program object (leave them in debug builds for debugging purposes)
glDetachShader(program_object, vertex_shader); glDeleteShader(vertex_shader);
glDetachShader(program_object, fragment_shader); glDeleteShader(fragment_shader);
#endif
return program_object;
}
void TcpConnection::sendInLoop(const void* data, size_t len)
{
loop_->assertInLoopThread();
if (state_ == kDisconnected)
{
LOG_WARN("TcpConnection::sendInLoop [%d]disconnected, give up writing", socket_->fd());
return;
}
size_t nwrote = 0;
size_t remaining = len;
bool faultError = false;
// 如果当前连接尚没有注册可写事件（比如直接调用send接口），并且发送缓冲区为空
// 就直接发送数据，发送成功则回调写完成事件；
if (!channel_->isWriting() && outputBuffer_.readableBytes() == 0)
{
nwrote = socket_->send((const char*)data, len);
if (nwrote >= 0)
{
remaining = len - nwrote;
if (remaining == 0 && writeCompleteCallback_)
{
loop_->queueInLoop(std::bind(writeCompleteCallback_, shared_from_this()));
}
}
else // nwrote < 0
{
nwrote = 0;
if (errno != EWOULDBLOCK)
{
LOG_ERROR("TcpConnection::sendInLoop error, fd[%d], error[%d]", socket_->fd(), errno);
if (errno == EPIPE || errno == ECONNRESET)
{
faultError = true;
}
}
}
}
ZL_ASSERT(remaining <= len)(remaining)(len)(socket_->fd());
//如果发送成功且数据尚未发送完毕，则将剩余数据存入缓冲区，并注册该channel上的可写事件
if (!faultError && remaining > 0)
{
outputBuffer_.write(static_cast<const char*>(data) + nwrote, remaining);
if (!channel_->isWriting())
{
channel_->enableWriting();
}
}
}