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Fixes for MacOS X (10.2 has no <sys/poll.h> and 10.4 version is broken).

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This commit is contained in:
gbeauche 2006-04-17 09:06:32 +00:00
parent 252f396ff3
commit 5b1977b9f2
1 changed files with 82 additions and 16 deletions
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98
BasiliskII/src/Unix/rpc_unix.cpp
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@ -38,7 +38,6 @@
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/poll.h>
#include <sys/wait.h>
#include <netinet/in.h>
#include <pthread.h>
@ -50,6 +49,10 @@
#define NON_BLOCKING_IO 0
#if defined __linux__
#define USE_ABSTRACT_NAMESPACES 1
#endif
/* ====================================================================== */
/* === RPC Connection Handling === */
@ -72,6 +75,7 @@ struct rpc_connection_t {
int type;
int status;
int socket;
char *socket_path;
int server_socket;
int server_thread_active;
pthread_t server_thread;
@ -95,6 +99,42 @@ int rpc_connection_busy(rpc_connection_t *connection)
return connection && connection->status == RPC_STATUS_BUSY;
}
// Prepare socket path for addr.sun_path[]
static int _rpc_socket_path(char **pathp, const char *ident)
{
int i, len;
len = strlen(ident);
if (pathp == NULL)
return 0;
char *path;
#if USE_ABSTRACT_NAMESPACES
const int len_bias = 1;
if ((path = (char *)malloc(len + len_bias + 1)) == NULL)
return 0;
path[0] = 0;
strcpy(&path[len_bias], ident);
#else
const int len_bias = 5;
if ((path = (char *)malloc(len + len_bias + 1)) == NULL)
return 0;
strcpy(path, "/tmp/");
for (i = 0; i < len; i++) {
char ch = ident[i];
if (ch == '/')
ch = '_';
path[len_bias + i] = ch;
}
#endif
len += len_bias;
path[len] = '\0';
if (*pathp)
free(*pathp);
*pathp = path;
return len;
}
// Initialize server-side RPC system
rpc_connection_t *rpc_init_server(const char *ident)
{
@ -102,6 +142,7 @@ rpc_connection_t *rpc_init_server(const char *ident)
rpc_connection_t *connection;
struct sockaddr_un addr;
socklen_t addr_len;
if (ident == NULL)
return NULL;
@ -124,9 +165,12 @@ rpc_connection_t *rpc_init_server(const char *ident)
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
addr.sun_path[0] = 0;
strncpy(&addr.sun_path[1], ident, sizeof(addr.sun_path) - 2);
if (bind(connection->server_socket, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
connection->socket_path = NULL;
addr_len = _rpc_socket_path(&connection->socket_path, ident);
memcpy(&addr.sun_path[0], connection->socket_path, addr_len);
addr_len += sizeof(struct sockaddr_un) - sizeof(addr.sun_path);
if (bind(connection->server_socket, (struct sockaddr *)&addr, addr_len) < 0) {
perror("server bind");
free(connection);
return NULL;
@ -148,6 +192,7 @@ rpc_connection_t *rpc_init_client(const char *ident)
rpc_connection_t *connection;
struct sockaddr_un addr;
socklen_t addr_len;
if (ident == NULL)
return NULL;
@ -169,17 +214,20 @@ rpc_connection_t *rpc_init_client(const char *ident)
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
addr.sun_path[0] = 0;
strncpy(&addr.sun_path[1], ident, sizeof(addr.sun_path) - 2);
connection->socket_path = NULL;
addr_len = _rpc_socket_path(&connection->socket_path, ident);
memcpy(&addr.sun_path[0], connection->socket_path, addr_len);
addr_len += sizeof(struct sockaddr_un) - sizeof(addr.sun_path);
// Wait at most 5 seconds for server to initialize
const int N_CONNECT_WAIT_DELAY = 10;
int n_connect_attempts = 5000 / N_CONNECT_WAIT_DELAY;
if (n_connect_attempts == 0)
n_connect_attempts = 1;
while (n_connect_attempts > 0) {
if (connect(connection->socket, (struct sockaddr *)&addr, sizeof(addr)) == 0)
if (connect(connection->socket, (struct sockaddr *)&addr, addr_len) == 0)
break;
if (errno != ECONNREFUSED) {
if (n_connect_attempts > 1 && errno != ECONNREFUSED && errno != ENOENT) {
perror("client_connect");
free(connection);
return NULL;
@ -203,6 +251,12 @@ int rpc_exit(rpc_connection_t *connection)
if (connection == NULL)
return RPC_ERROR_CONNECTION_NULL;
if (connection->socket_path) {
if (connection->socket_path[0])
unlink(connection->socket_path);
free(connection->socket_path);
}
if (connection->type == RPC_CONNECTION_SERVER) {
if (connection->server_thread_active) {
pthread_cancel(connection->server_thread);
@ -236,12 +290,22 @@ static void *rpc_server_func(void *arg)
connection->server_thread_active = 1;
for (;;) {
#if NON_BLOCKING_IO
struct pollfd pf = { connection->socket, POLLIN, 0 };
int res = poll(&pf, 1, -1);
if (res <= 0)
// XXX broken MacOS X doesn't implement cancellation points correctly
pthread_testcancel();
// wait for data to arrive
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(connection->socket, &rfds);
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 50000;
int ret = select(connection->socket + 1, &rfds, NULL, NULL, &tv);
if (ret == 0)
continue;
if (ret < 0)
break;
#endif
rpc_dispatch(connection);
}
connection->server_thread_active = 0;
@ -608,9 +672,11 @@ static inline int _rpc_message_recv_bytes(rpc_message_t *message, unsigned char
#if NON_BLOCKING_IO
if (errno == EAGAIN || errno == EWOULDBLOCK) {
// wait for data to arrive
struct pollfd pf = { message->socket, POLLIN, 0 };
int res = poll(&pf, 1, -1);
if (res > 0)
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(message->socket, &rfds);
int ret = select(message->socket + 1, &rfds, NULL, NULL, NULL);
if (ret > 0)
continue;
}
#endif