0
我的posix tcp服務器似乎全部泄漏。我正在用ps和top等工具來關注他們,他們認爲內存在不斷增加。 只要客戶進入和/或離開,就會發生這種情況。通用C Tcp服務器內存泄漏
EG。假設ps首先報告100 VSZ。一個客戶進入並且它上升到238.然後客戶退出並且它下降到138. 不是100!每次客戶進入和退出內存都會增加。
我已經嘗試了一噸不同的內存泄漏工具,例如。 valgrind並沒有發現任何東西。 (而且他們也不認爲它也是漏水的。)
難道是ps和top嗎?這似乎不太可能。
我做了演示我的代碼和潛在的泄漏少量樣品通用:
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <signal.h>
#include <unistd.h>
#define MAX_BUFFER 100*1024
void* server_process_thread(void* args)
{
int client = (int)args;
unsigned char* buffer = NULL;
int r;
/* allocate something huge */
if((buffer = malloc(MAX_BUFFER)) == NULL)
{
perror("Couldn't allocate");
goto exit;
}
printf("Client processing ...\n");
//echo all that comes
while(1)
{
r = read(client, buffer, MAX_BUFFER);
if(r <= 0) break;
write(client, buffer, r);
}
exit:
printf("Client exit\n");
free(buffer);
close(client);
pthread_exit(NULL);
}
int main(void)
{
struct sockaddr_in server_sockaddr = {0};
struct sockaddr_in clientSockAddr = {0};
int flags = 1;
int server = 0;
int client = 0;
pthread_t thread = 0;
socklen_t clientSockSize = sizeof(clientSockAddr);
//init tcp
signal(SIGCHLD, SIG_IGN);
signal(SIGPIPE, SIG_IGN);
signal(SIGALRM, SIG_IGN);
if ((server = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
{
perror("Couldn't open socket");
return -1;
}
flags = 1;
if ((setsockopt(server, SOL_SOCKET, SO_REUSEADDR, (void *) &flags, sizeof(flags))) == -1)
{
perror("Couldn't set socket reuse");
return -1;
}
server_sockaddr.sin_family = AF_INET;
server_sockaddr.sin_port = htons(666);
server_sockaddr.sin_addr.s_addr = htonl(INADDR_ANY); //IP
if (bind(server, (struct sockaddr *) &server_sockaddr, sizeof(server_sockaddr)) == -1)
{
perror("Couldn't bind socket");
return -1;
}
//LISTEN
if (listen(server, SOMAXCONN) == -1)
{
perror("Couldn't listen on socket");
return -1;
}
printf("TCP Echo Server started ...\n");
//wait for clients
while(1)
{
client = accept(server, (struct sockaddr*) (&clientSockAddr), &clientSockSize);
if(pthread_create(&thread, NULL, server_process_thread, (void*)client) != 0)
{
perror("Couldn't create thread");
return -1;
}
}
//dispose
printf("Server exit\n");
close(server);
return EXIT_SUCCESS;
}
現在,我可能會錯過一些錯誤處理在這裏和那裏,但有在該代碼中的一些根本缺陷?
我以爲我已經嘗試過,但它似乎工作時添加到示例。 – Illishar 2012-01-02 11:14:03