diff --git a/codegen/server_template.cpp b/codegen/server_template.cpp
index 192e56d..3b77e05 100644
--- a/codegen/server_template.cpp
+++ b/codegen/server_template.cpp
@@ -33,6 +33,7 @@ const char * PHXRPC_EPOLL_SERVER_MAIN_TEMPLATE =
 #include "phxrpc/rpc.h"
 #include "phxrpc/http.h"
 #include "phxrpc/file.h"
+#include "phxrpc/comm.h"
 
 using namespace std;
 
@@ -78,10 +79,7 @@ int main( int argc, char * argv[] ) {
 
     if( daemonize ) phxrpc::ServerUtils::Daemonize();
 
-    {
-        bool chk = (signal(SIGPIPE, SIG_IGN) != SIG_ERR);
-        if (!chk) assert(chk);
-    }
+    PHXRPC_ASSERT(signal(SIGPIPE, SIG_IGN) != SIG_ERR);
 
     //set customize log/monitor
     //phxrpc::setlog(openlog, closelog, vlog);
@@ -171,10 +169,7 @@ int main( int argc, char * argv[] ) {
 
     if( daemonize ) phxrpc::ServerUtils::Daemonize();
 
-    {
-        bool chk = (signal(SIGPIPE, SIG_IGN) != SIG_ERR);
-        if (!chk) assert(chk);
-    }
+    PHXRPC_ASSERT(signal(SIGPIPE, SIG_IGN) != SIG_ERR);
 
     //set customize log/monitor
     //phxrpc::setlog(openlog, closelog, vlog);
diff --git a/phxrpc/Makefile b/phxrpc/Makefile
index 7185e22..79a2561 100644
--- a/phxrpc/Makefile
+++ b/phxrpc/Makefile
@@ -14,12 +14,14 @@ LIB_RPC_OBJS = rpc/phxrpc.pb.o rpc/http_caller.o rpc/server_config.o rpc/client_
 		   rpc/socket_stream_phxrpc.o rpc/uthread_caller.o rpc/client_monitor.o rpc/server_monitor.o \
 		   rpc/monitor_factory.o rpc/hsha_server.o rpc/server_base.o
 
+LIB_COMM_OBJS = comm/assert.o
+
 ifeq ($(OS),Darwin)
 	CFLAGS += -I$(PHXRPC_ROOT)/plugin_darwin/network
 	LIB_NETWORK_OBJS += ../plugin_darwin/network/epoll-darwin.o
 endif
 
-LIB_OBJS = $(LIB_RPC_OBJS) $(LIB_HTTP_OBJS) $(LIB_NETWORK_OBJS) $(LIB_FILE_OBJS) \
+LIB_OBJS = $(LIB_RPC_OBJS) $(LIB_HTTP_OBJS) $(LIB_NETWORK_OBJS) $(LIB_FILE_OBJS) $(LIB_COMM_OBJS)
 
 TARGETS = libphxrpc.a
 
diff --git a/phxrpc/comm.h b/phxrpc/comm.h
new file mode 100644
index 0000000..a2ef976
--- /dev/null
+++ b/phxrpc/comm.h
@@ -0,0 +1,24 @@
+/*
+Tencent is pleased to support the open source community by making 
+PhxRPC available.
+Copyright (C) 2016 THL A29 Limited, a Tencent company. 
+All rights reserved.
+
+Licensed under the BSD 3-Clause License (the "License"); you may 
+not use this file except in compliance with the License. You may 
+obtain a copy of the License at
+
+https://opensource.org/licenses/BSD-3-Clause
+
+Unless required by applicable law or agreed to in writing, software 
+distributed under the License is distributed on an "AS IS" basis, 
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 
+implied. See the License for the specific language governing 
+permissions and limitations under the License.
+
+See the AUTHORS file for names of contributors.
+*/
+
+#pragma once
+
+#include "comm/assert.h"
diff --git a/phxrpc/comm/assert.cpp b/phxrpc/comm/assert.cpp
new file mode 100644
index 0000000..e6d96d7
--- /dev/null
+++ b/phxrpc/comm/assert.cpp
@@ -0,0 +1,33 @@
+/*
+Tencent is pleased to support the open source community by making 
+PhxRPC available.
+Copyright (C) 2016 THL A29 Limited, a Tencent company. 
+All rights reserved.
+
+Licensed under the BSD 3-Clause License (the "License"); you may 
+not use this file except in compliance with the License. You may 
+obtain a copy of the License at
+
+https://opensource.org/licenses/BSD-3-Clause
+
+Unless required by applicable law or agreed to in writing, software 
+distributed under the License is distributed on an "AS IS" basis, 
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 
+implied. See the License for the specific language governing 
+permissions and limitations under the License.
+
+See the AUTHORS file for names of contributors.
+*/
+
+#include <cstdio>
+#include <cstdlib>
+
+namespace phxrpc {
+
+void __bad_assertion(const char *mess) {
+    fputs(mess, stderr);
+    abort();
+}
+
+}
+
diff --git a/phxrpc/comm/assert.h b/phxrpc/comm/assert.h
new file mode 100644
index 0000000..172e4a4
--- /dev/null
+++ b/phxrpc/comm/assert.h
@@ -0,0 +1,40 @@
+/*
+Tencent is pleased to support the open source community by making 
+PhxRPC available.
+Copyright (C) 2016 THL A29 Limited, a Tencent company. 
+All rights reserved.
+
+Licensed under the BSD 3-Clause License (the "License"); you may 
+not use this file except in compliance with the License. You may 
+obtain a copy of the License at
+
+https://opensource.org/licenses/BSD-3-Clause
+
+Unless required by applicable law or agreed to in writing, software 
+distributed under the License is distributed on an "AS IS" basis, 
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 
+implied. See the License for the specific language governing 
+permissions and limitations under the License.
+
+See the AUTHORS file for names of contributors.
+*/
+
+#pragma once
+
+namespace phxrpc {
+
+void __bad_assertion(const char *mess);
+
+}
+
+#undef __PHXRPC_STR
+#undef __PHXRPC_XSTR
+#undef PHXRPC_ASSERT
+
+#define __PHXRPC_STR(x) # x
+#define __PHXRPC_XSTR(x) __PHXRPC_STR(x)
+#define PHXRPC_ASSERT(expr)                                             \
+    ((expr) ? (void)0 :                                                 \
+     phxrpc::__bad_assertion("Assertion \"" #expr                       \
+                             "\" failed, file " __PHXRPC_XSTR(__FILE__) \
+                             ", line " __PHXRPC_XSTR(__LINE__) "\n"))
diff --git a/phxrpc/http/test_http_client.cpp b/phxrpc/http/test_http_client.cpp
index 2b202ca..a9e0150 100644
--- a/phxrpc/http/test_http_client.cpp
+++ b/phxrpc/http/test_http_client.cpp
@@ -29,6 +29,7 @@ See the AUTHORS file for names of contributors.
 #include "http_msg.h"
 #include "http_client.h"
 
+#include "phxrpc/comm.h"
 #include "phxrpc/file/file_utils.h"
 #include "phxrpc/file/opt_map.h"
 #include "phxrpc/network/socket_stream_block.h"
@@ -50,10 +51,8 @@ void ShowUsage(const char *program) {
 }
 
 int main(int argc, char **argv) {
-    {
-        bool chk = (sigset(SIGPIPE, SIG_IGN) != SIG_ERR);
-        if (!chk) assert(chk);
-    }
+
+    PHXRPC_ASSERT(signal(SIGPIPE, SIG_IGN) != SIG_ERR);
 
     OptMap optMap("h:p:r:u:f:ov");
 
diff --git a/phxrpc/network/uthread_context_util.cpp b/phxrpc/network/uthread_context_util.cpp
index 41cf00c..e7d6e57 100644
--- a/phxrpc/network/uthread_context_util.cpp
+++ b/phxrpc/network/uthread_context_util.cpp
@@ -25,6 +25,7 @@ See the AUTHORS file for names of contributors.
 #include <unistd.h>
 #include <sys/mman.h>
 
+#include "phxrpc/comm.h"
 
 namespace phxrpc {
 
@@ -48,11 +49,8 @@ UThreadStackMemory :: UThreadStackMemory(const size_t stack_size, const bool nee
                 PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
         assert(raw_stack_ != nullptr);
 
-        bool chk;
-        chk = (mprotect(raw_stack_, page_size, PROT_NONE) == 0);
-        if (!chk) assert(chk);
-        chk = (mprotect((void *)((char *)raw_stack_ + stack_size_ + page_size), page_size, PROT_NONE) == 0);
-        if (!chk) assert(chk);
+        PHXRPC_ASSERT(mprotect(raw_stack_, page_size, PROT_NONE) == 0);
+        PHXRPC_ASSERT(mprotect((void *)((char *)raw_stack_ + stack_size_ + page_size), page_size, PROT_NONE) == 0);
 
         stack_ = (void *)((char *)raw_stack_ + page_size);
     } else {
@@ -63,18 +61,13 @@ UThreadStackMemory :: UThreadStackMemory(const size_t stack_size, const bool nee
 }
 
 UThreadStackMemory :: ~UThreadStackMemory() {
-    bool chk;
     int page_size = getpagesize();
     if (need_protect_) {
-        chk = (mprotect(raw_stack_, page_size, PROT_READ | PROT_WRITE) == 0);
-        if (!chk) assert(chk);
-        chk = (mprotect((void *)((char *)raw_stack_ + stack_size_ + page_size), page_size, PROT_READ | PROT_WRITE) == 0);
-        if (!chk) assert(chk);
-        chk = (munmap(raw_stack_, stack_size_ + page_size * 2) == 0);
-        if (!chk) assert(chk);
+        PHXRPC_ASSERT(mprotect(raw_stack_, page_size, PROT_READ | PROT_WRITE) == 0);
+        PHXRPC_ASSERT(mprotect((void *)((char *)raw_stack_ + stack_size_ + page_size), page_size, PROT_READ | PROT_WRITE) == 0);
+        PHXRPC_ASSERT(munmap(raw_stack_, stack_size_ + page_size * 2) == 0);
     } else {
-        chk = (munmap(raw_stack_, stack_size_) == 0);
-        if (!chk) assert(chk);
+        PHXRPC_ASSERT(munmap(raw_stack_, stack_size_) == 0);
     }
 }
 
diff --git a/phxrpc/network/uthread_epoll.cpp b/phxrpc/network/uthread_epoll.cpp
index 935f428..7b33e01 100644
--- a/phxrpc/network/uthread_epoll.cpp
+++ b/phxrpc/network/uthread_epoll.cpp
@@ -42,6 +42,7 @@ See the AUTHORS file for names of contributors.
 #include <sys/epoll.h>
 #endif
 
+#include "phxrpc/comm.h"
 #include "phxrpc/file/log_utils.h"
 #include "phxrpc/network/socket_stream_base.h"
 
@@ -80,8 +81,7 @@ EpollNotifier::~EpollNotifier() {
 }
 
 void EpollNotifier::Run() {
-    bool chk = (pipe(pipe_fds_) == 0);
-    if (!chk) assert(chk);
+    PHXRPC_ASSERT(pipe(pipe_fds_) == 0);
     fcntl(pipe_fds_[1], F_SETFL, O_NONBLOCK);
     scheduler_->AddTask(std::bind(&EpollNotifier::Func, this), nullptr);
 }