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zeromq.c
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zeromq.c
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/* -*- Mode: C; Character-encoding: utf-8; -*- */
/* zeromq.c
This implements Kno bindings to the ZeroMQ message library
Copyright (C) 2007-2019 beingmeta, inc.
Copyright (C) 2020-2022 beingmeta, LLC
*/
#ifndef _FILEINFO
#define _FILEINFO __FILE__
#endif
#define U8_INLINE_IO 1
#define DEBUG_ZEROMQ 0
static int zeromq_loglevel = 4;
#define U8_LOGLEVEL (zeromq_loglevel)
#include "kno/knosource.h"
#include "kno/lisp.h"
#include "kno/eval.h"
#include "kno/cprims.h"
#include "zeromq.h"
#include "libu8/u8printf.h"
#include "libu8/u8convert.h"
#include "zeromq_sockopts.h"
#define ZMQ_SOCK_REF(x,i) KNO_ZMQ_SOCK_REF(x,i)
#define ZMQ_SOCKETS(x) KNO_ZMQ_SOCKETS(x)
static u8_condition ZeroMQ_Error = _("ZeroMQ error");
static u8_condition ZeroMQ_WrongThread =
_("Using ZeroMQ socket from different thread");
KNO_EXPORT int kno_init_zeromq(void) KNO_LIBINIT_FN;
kno_lisp_type kno_zmqsock_type;
#define KNO_ZMQSOCK_TYPE 0x90c7c50L
#if DEBUG_ZEROMQ
static u8_mutex socket_counter_lock;
static int n_zeromq_sockets = 0;
static void count_zmq_sockets(int delta)
{
u8_lock_mutex(&socket_counter_lock);
n_zeromq_sockets += delta;
u8_unlock_mutex(&socket_counter_lock);
}
#else
#define count_zmq_sockets(n)
#endif
static struct KNO_HASHTABLE sockopts_table;
static U8_MUTEX_DECL(zeromq_ctx_lock);
void *kno_zeromq_ctx = NULL, *zeromq_init_ctx = NULL;
#ifndef KNO_INIT_ZMQ_SOCKETS_PER_THREAD
#define KNO_INIT_ZMQ_SOCKETS_PER_THREAD 16
#endif
static kno_zmq_thread_data init_zmq_thread_data(void);
#if KNO_USE__THREAD
__thread kno_zmq_thread_data kno_zmq_thread_data = NULL;
#define get_zmq_thread_data() \
( (kno_zmq_thread_data) ? (kno_zmq_thread_data) : (init_zmq_thread_data()) )
#else
u8_tld_key kno_zmq_thread_data_key = 0;
#define get_zmq_thread_data() \
( (u8_tld_get(kno_zmq_thread_data_key)) ? \
(u8_tld_get(kno_zmq_thread_data_key)) : \
(init_zmq_thread_data()) )
#endif
KNO_EXPORT kno_zmq_thread_data kno_thread_zsockets()
{
return get_zmq_thread_data();
}
/* ZeroMQ contexts */
static void kno_zeromq_thread_cleanup(void);
static void destroy_zeromq_ctx()
{
if (kno_zeromq_ctx) {
void *ctx;
kno_zeromq_thread_cleanup();
u8_lock_mutex(&zeromq_ctx_lock);
ctx = kno_zeromq_ctx;
kno_zeromq_ctx = NULL;
u8_unlock_mutex(&zeromq_ctx_lock);
zmq_ctx_destroy(ctx);}
}
KNO_EXPORT void *kno_init_zeromq_ctx()
{
int initialized = 0;
u8_lock_mutex(&zeromq_ctx_lock);
if (kno_zeromq_ctx == NULL) {
zeromq_init_ctx = zmq_ctx_new();
kno_zeromq_ctx = zeromq_init_ctx;
atexit(destroy_zeromq_ctx);
initialized = 1;}
u8_unlock_mutex(&zeromq_ctx_lock);
if (initialized)
u8_logf(LOG_DEBUG,"ZeroMQ/Init","Done");
else NO_ELSE;
return kno_zeromq_ctx;
}
DEFC_PRIM("zeromq/shutdown!",zeromq_shutdown_prim,
KNO_MAX_ARGS(0)|KNO_MIN_ARGS(0),
"Shuts down the current ZeroMQ session/context")
static lispval zeromq_shutdown_prim()
{
if (kno_zeromq_ctx) {
kno_zeromq_thread_cleanup();
void *ctx; int done = 0;
u8_lock_mutex(&zeromq_ctx_lock);
if (kno_zeromq_ctx) {
ctx = kno_zeromq_ctx;
kno_zeromq_ctx = NULL;
zmq_ctx_destroy(ctx);
done = 1;}
u8_unlock_mutex(&zeromq_ctx_lock);
if (done) return KNO_TRUE;
else return KNO_FALSE;}
else return KNO_FALSE;
}
/* Symbols to constants */
static lispval publish_symbol, subscribe_symbol, request_symbol, reply_symbol;
static lispval push_symbol, pull_symbol, pair_symbol, stream_symbol;
static lispval dealer_symbol, router_symbol, xpub_symbol, xsub_symbol;
static lispval nowait_symbol, convert_symbol, wait_symbol;
static int get_socket_type(lispval symbol)
{
if (symbol == request_symbol) return ZMQ_REQ;
else if (symbol == reply_symbol) return ZMQ_REP;
else if (symbol == publish_symbol) return ZMQ_PUB;
else if (symbol == subscribe_symbol) return ZMQ_SUB;
else if (symbol == pair_symbol) return ZMQ_PAIR;
else if (symbol == stream_symbol) return ZMQ_STREAM;
else if (symbol == dealer_symbol) return ZMQ_DEALER;
else if (symbol == router_symbol) return ZMQ_ROUTER;
else if (symbol == push_symbol) return ZMQ_PUSH;
else if (symbol == pull_symbol) return ZMQ_PULL;
else if (symbol == xpub_symbol) return ZMQ_XPUB;
else if (symbol == xsub_symbol) return ZMQ_XSUB;
else return -1;
}
/* ZMQ objects */
static ssize_t zmq_drop_socket(struct KNO_ZMQSOCK *socket);
static ssize_t zmq_add_socket(struct KNO_ZMQSOCK *socket);
static struct KNO_ZMQSOCK *zmq_sock(lispval typesym)
{
int socktype = get_socket_type(typesym);
if (KNO_RARELY(socktype<0)) {
kno_type_error("ZeroMQ socket type","zmq_sock",typesym);
return NULL;}
void *ctx = KNO_ZMQ_CTX;
if (KNO_RARELY(ctx == NULL)) {
kno_err("No ZMQ context","zmq_sock",NULL,VOID);
return NULL;}
struct KNO_ZMQSOCK *zmq = u8_alloc(KNO_ZMQSOCK);
if (zmq == NULL) return NULL;
KNO_INIT_FRESH_CONS(zmq,kno_zmqsock_type);
zmq->zmq_thread = 0;
zmq->zmq_socktype = typesym;
zmq->zmq_flags = 0;
zmq->zmq_ptr = zmq_socket(ctx,socktype);
ssize_t rv = zmq_add_socket(zmq);
if (rv<0) {
u8_free(zmq);
u8_seterr("ZeroMQ_AddSocketFailed","zmq_make",NULL);
return NULL;}
zmq->zmq_thread = pthread_self();
u8_logf(LOG_DEBUG,"ZeroMQ/Socket",
"%q by zmq_sock in thread %lld",(lispval)zmq,u8_threadid());
count_zmq_sockets(1);
return zmq;
}
static lispval zmq_sockptr(void *ptr,lispval typesym,lispval id)
{
int socktype = get_socket_type(typesym);
if (KNO_RARELY(socktype<0))
return kno_type_error("ZeroMQ socket type","zmq_sock",typesym);
void *ctx = KNO_ZMQ_CTX;
if (KNO_RARELY(ctx == NULL))
return kno_err("No ZMQ context","zmq_sock",NULL,VOID);
struct KNO_ZMQSOCK *zmq = u8_alloc(KNO_ZMQSOCK);
if (zmq == NULL) return KNO_ERROR;
KNO_INIT_FRESH_CONS(zmq,kno_zmqsock_type);
if (STRINGP(id)) zmq->zmq_id = u8_strdup(KNO_CSTRING(id));
zmq->zmq_thread = 0;
zmq->zmq_socktype = typesym;
zmq->zmq_flags = 0;
zmq->zmq_ptr = ptr;
ssize_t rv = zmq_add_socket(zmq);
if (rv<0) {
u8_free(zmq);
return kno_err("ZeroMQ_AddSocketFailed","zmq_make",NULL,VOID);}
zmq->zmq_thread = pthread_self();
u8_logf(LOG_DEBUG,"ZeroMQ/Socket",
"%q by zmq_sockptr in thread %lld",(lispval)zmq,u8_threadid());
count_zmq_sockets(1);
return (lispval) zmq;
}
static void recycle_zeromq(struct KNO_RAW_CONS *c)
{
struct KNO_ZMQSOCK *zmq = (kno_zmqsock) c;
u8_logf(LOG_DEBUG,"ZeroMQ/Recycle",
"Recycling %q in thread %lld",
(lispval)zmq,u8_threadid());
int linger = 500;
int sockset = zmq_setsockopt(zmq->zmq_ptr,ZMQ_LINGER,&linger,sizeof(linger));
if (sockset<0) {sockset=errno; errno=0;}
if (sockset == ETERM) sockset = 0;
int sockclosed = zmq_close(zmq->zmq_ptr);
if (sockclosed<0) {sockclosed=errno; errno=0;}
int sockdropped = zmq_drop_socket(zmq);
if (sockdropped<0) {sockdropped=errno; errno=0;}
if (zmq->zmq_id) {
u8_free(zmq->zmq_id);
zmq->zmq_id = NULL;}
if (sockset)
u8_log(LOG_CRIT,"ZeroMQ/Recycle/setsockopt",
"Failed with %d (%s)",sockset,zmq_strerror(sockset));
if (sockclosed)
u8_log(LOG_CRIT,"ZeroMQ/Recycle/closesock",
"Failed with %d (%s)",sockclosed,zmq_strerror(sockclosed));
if (sockdropped)
u8_log(LOG_CRIT,"ZeroMQ/Recycle/dropsock",
"Failed with %d (%s)",sockdropped,zmq_strerror(sockdropped));
count_zmq_sockets(-1);
if ( (sockset) || (sockclosed) || (sockdropped) ) return;
if (!(KNO_STATIC_CONSP(c)))
u8_free(c);
}
static int unparse_zeromq(struct U8_OUTPUT *out,lispval x)
{
struct KNO_ZMQSOCK *zmq = (kno_zmqsock) x;
u8_string id = zmq->zmq_id;
lispval socktype = zmq->zmq_socktype;
if (VOIDP(socktype))
u8_puts(out,"#<ZMQSOCK");
else u8_printf(out,"#<ZMQSOCK (%q)",socktype);
if (id) u8_printf(out," '%s'",id);
u8_printf(out," #!0x%llx>",x);
return 1;
}
/* Utility functions and macros */
static lispval zmq_error(u8_context cxt,lispval obj)
{
int err = zmq_errno();
const char *errmsg = zmq_strerror(err);
u8_logf(LOG_ERROR,"ZeroMQ","Error %s in %s on %q",errmsg,cxt,obj);
return kno_err(ZeroMQ_Error,cxt,errmsg,obj);
}
#define ZMQ_CHECK_SOCK(x,caller) \
kno_zmqsock U8_MAYBE_UNUSED x ## _zmq; \
void U8_MAYBE_UNUSED * x ## _ptr; \
if (KNO_RARELY( ( !(KNO_TYPEP(x,kno_zmqsock_type)) ) )) \
return kno_err(kno_TypeError,caller,"zmqsock",x); \
else { \
x ## _zmq = (kno_zmqsock) x; \
x ## _ptr = x ## _zmq ->zmq_ptr; \
if ( (x ## _zmq->zmq_thread) != (pthread_self()) ) { \
u8_byte buf[128]; \
return kno_err(ZeroMQ_WrongThread,caller, \
u8_bprintf(buf,"S0x%llx from T0x%llx used in T0x%llx", \
(KNO_LONGVAL(x)), \
(KNO_LONGVAL(x ## _zmq->zmq_thread)), \
(KNO_LONGVAL(pthread_self()))), \
KNO_VOID);}}
#define ZMQ_CHECK_SOCKET(socket,context) \
/* Sockets */
DEFC_PRIM("zmq/socket",zmq_socket_prim,
KNO_MAX_ARGS(1)|KNO_MIN_ARGS(1),
"Creates a ZMQ socket",
{"typename",kno_any_type,KNO_VOID})
static lispval zmq_socket_prim(lispval typename)
{
struct KNO_ZMQSOCK *sockptr = zmq_sock(typename);
if (sockptr)
return (lispval) sockptr;
else return KNO_ERROR;
}
DEFC_PRIM("zmq/close",zmq_close_prim,
KNO_MAX_ARGS(1)|KNO_MIN_ARGS(1),
"Closes a ZMQ socket",
{"s",kno_any_type,KNO_VOID})
static lispval zmq_close_prim(lispval s)
{
ZMQ_CHECK_SOCK(s,"ZMQ/BIND!");
int rv = zmq_close(s_zmq->zmq_ptr);
u8_logf(LOG_DEBUG,"ZMQ/CLOSE",
"Closed (rv=%d) %q in thread %lld",
rv,(lispval)s,u8_threadid());
if (rv)
return kno_err("ZMQ/CloseFailed","zmq_close_prim",NULL,s);
else return KNO_FALSE;
}
DEFC_PRIM("zmq/bind!",zmq_bind_prim,
KNO_MAX_ARGS(2)|KNO_MIN_ARGS(2),
"Binds a ZMQ socket to an address",
{"s",kno_any_type,KNO_VOID},
{"address",kno_any_type,KNO_VOID})
static lispval zmq_bind_prim(lispval s,lispval address)
{
ZMQ_CHECK_SOCK(s,"ZMQ/BIND!");
if (!(KNO_STRINGP(address)))
return kno_err(kno_TypeError,"zmq_bind_prim","address string",address);
u8_string addr = KNO_CSTRING(address);
int rv = zmq_bind(s_zmq->zmq_ptr,addr);
if (rv == 0)
return kno_incref(s);
else return zmq_error("ZMQ/BIND!",address);
}
DEFC_PRIM("zmq/unbind!",zmq_unbind_prim,
KNO_MAX_ARGS(2)|KNO_MIN_ARGS(2),
"Unbinds a ZMQ socket from an address",
{"s",kno_any_type,KNO_VOID},
{"address",kno_any_type,KNO_VOID})
static lispval zmq_unbind_prim(lispval s,lispval address)
{
ZMQ_CHECK_SOCK(s,"ZMQ/UNBIND!");
if (!(KNO_STRINGP(address)))
return kno_err(kno_TypeError,"zmq_unbind_prim","address string",address);
u8_string addr = KNO_CSTRING(address);
int rv = zmq_unbind(s_zmq->zmq_ptr,addr);
if (rv == 0)
return kno_incref(s);
else return zmq_error("ZMQ/UNBIND!",address);
}
DEFC_PRIM("zmq/connect!",zmq_connect_prim,
KNO_MAX_ARGS(2)|KNO_MIN_ARGS(2),
"Connects a ZMQ socket to an address",
{"s",kno_any_type,KNO_VOID},
{"address",kno_any_type,KNO_VOID})
static lispval zmq_connect_prim(lispval s,lispval address)
{
ZMQ_CHECK_SOCK(s,"ZMQ/CONNECT!");
if (!(KNO_STRINGP(address)))
return kno_err(kno_TypeError,"zmq_connect_prim","address string",address);
u8_string addr = KNO_CSTRING(address);
int rv = zmq_connect(s_zmq->zmq_ptr,addr);
if (rv == 0)
return kno_incref(s);
else return zmq_error("ZMQ/CONNECT!",address);
}
DEFC_PRIM("zmq/disconnect!",zmq_disconnect_prim,
KNO_MAX_ARGS(2)|KNO_MIN_ARGS(2),
"Disconnects a ZMQ socket to an address",
{"s",kno_any_type,KNO_VOID},
{"address",kno_any_type,KNO_VOID})
static lispval zmq_disconnect_prim(lispval s,lispval address)
{
ZMQ_CHECK_SOCK(s,"ZMQ/DISCONNECT!");
if (!(KNO_STRINGP(address)))
return kno_err(kno_TypeError,"zmq_disconnect_prim","address string",address);
u8_string addr = KNO_CSTRING(address);
int rv = zmq_disconnect(s_zmq->zmq_ptr,addr);
if (rv == 0)
return kno_incref(s);
else return zmq_error("ZMQ/DISCONNECT!",address);
}
/* Sockopts */
DEFC_PRIM("zmq/sockopt",zmq_getsockopt_prim,
KNO_MAX_ARGS(2)|KNO_MIN_ARGS(2),
"Gets a socket option",
{"socket",kno_any_type,KNO_VOID},
{"optname",kno_any_type,KNO_VOID})
static lispval zmq_getsockopt_prim(lispval socket,lispval optname)
{
ZMQ_CHECK_SOCK(socket,"ZMQ/DISCONNECT!");
lispval optcode_val = kno_hashtable_get(&sockopts_table,optname,VOID);
if (VOIDP(optcode_val))
return kno_type_error("sockopt","zmq_getsockpt_prim",optname);
int optcode = KNO_INT(optcode_val);
switch (optcode) {
/* Integer values */
case ZMQ_BACKLOG: case ZMQ_CONNECT_TIMEOUT: case ZMQ_TYPE:
case ZMQ_EVENTS: case ZMQ_FD: case ZMQ_HANDSHAKE_IVL:
case ZMQ_IMMEDIATE: case ZMQ_INVERT_MATCHING:
case ZMQ_IPV4ONLY: case ZMQ_IPV6:
case ZMQ_LINGER: case ZMQ_MECHANISM:
case ZMQ_MULTICAST_HOPS: case ZMQ_MULTICAST_MAXTPDU:
case ZMQ_PLAIN_SERVER: case ZMQ_USE_FD: case ZMQ_RATE:
case ZMQ_RCVBUF: case ZMQ_RCVHWM: case ZMQ_RCVMORE:
case ZMQ_RCVTIMEO: case ZMQ_RECONNECT_IVL:
case ZMQ_RECONNECT_IVL_MAX: case ZMQ_RECOVERY_IVL:
case ZMQ_SNDBUF: case ZMQ_SNDHWM: case ZMQ_SNDTIMEO:
case ZMQ_TCP_KEEPALIVE: case ZMQ_TCP_KEEPALIVE_CNT:
case ZMQ_TCP_KEEPALIVE_IDLE: case ZMQ_TCP_KEEPALIVE_INTVL:
case ZMQ_TCP_MAXRT: case ZMQ_THREAD_SAFE: case ZMQ_TOS: {
int val; ssize_t sz = sizeof(val);
int rv = zmq_getsockopt(socket_ptr,optcode,&val,&sz);
if (rv == 0)
return KNO_INT(val);
else return zmq_error(KNO_SYMBOL_NAME(optname),socket);}
case ZMQ_VMCI_BUFFER_SIZE:
case ZMQ_VMCI_BUFFER_MIN_SIZE: case ZMQ_VMCI_BUFFER_MAX_SIZE:
case ZMQ_AFFINITY: case ZMQ_MAXMSGSIZE: {
long long val; ssize_t sz = sizeof(val);
int rv = zmq_getsockopt(socket_ptr,optcode,&val,&sz);
if (rv == 0)
return KNO_INT(val);
else return zmq_error(KNO_SYMBOL_NAME(optname),socket);}
case ZMQ_LAST_ENDPOINT:
case ZMQ_PLAIN_PASSWORD: case ZMQ_PLAIN_USERNAME:
case ZMQ_SOCKS_PROXY: case ZMQ_ZAP_DOMAIN: {
char *val = NULL; ssize_t sz = -1;
int rv = zmq_getsockopt(socket_ptr,optcode,&val,&sz);
if (rv == 0) {
if ( (val) && (sz >= 0) ) {
if (u8_validate(val,sz))
return kno_make_string(NULL,sz,val);
else return kno_make_packet(NULL,sz,val);}
else return KNO_FALSE;}
else return zmq_error(KNO_SYMBOL_NAME(optname),socket);}
case ZMQ_ROUTING_ID:
case ZMQ_CURVE_PUBLICKEY: case ZMQ_CURVE_SECRETKEY: case ZMQ_CURVE_SERVERKEY: {
char *val = NULL; ssize_t sz = -1;
int rv = zmq_getsockopt(socket_ptr,optcode,&val,&sz);
if (rv == 0) {
if ( (val) && (sz >= 0) )
return kno_make_packet(NULL,sz,val);
else return KNO_FALSE;}
else return zmq_error(KNO_SYMBOL_NAME(optname),socket);}
default:
return KNO_FALSE;}
}
DEFC_PRIM("zmq/sockopt!",zmq_setsockopt_prim,
KNO_MAX_ARGS(3)|KNO_MIN_ARGS(3),
"Sets a socket option",
{"socket",kno_any_type,KNO_VOID},
{"optname",kno_any_type,KNO_VOID},
{"value",kno_any_type,KNO_VOID})
static lispval zmq_setsockopt_prim(lispval socket,lispval optname,
lispval value)
{
ZMQ_CHECK_SOCK(socket,"SOCKOPT/SET!");
lispval optcode_val = kno_hashtable_get(&sockopts_table,optname,VOID);
if (VOIDP(optcode_val))
return kno_type_error("sockopt","zmq_setsockpt_prim",optname);
int optcode = KNO_INT(optcode_val);
switch (optcode) {
/* Integer values */
case ZMQ_BACKLOG: case ZMQ_CONNECT_TIMEOUT: case ZMQ_TYPE:
case ZMQ_EVENTS: case ZMQ_FD: case ZMQ_HANDSHAKE_IVL:
case ZMQ_IMMEDIATE: case ZMQ_INVERT_MATCHING:
case ZMQ_IPV4ONLY: case ZMQ_IPV6:
case ZMQ_LINGER: case ZMQ_MECHANISM:
case ZMQ_MULTICAST_HOPS: case ZMQ_MULTICAST_MAXTPDU:
case ZMQ_PLAIN_SERVER: case ZMQ_USE_FD: case ZMQ_RATE:
case ZMQ_RCVBUF: case ZMQ_RCVHWM: case ZMQ_RCVMORE:
case ZMQ_RCVTIMEO: case ZMQ_RECONNECT_IVL:
case ZMQ_RECONNECT_IVL_MAX: case ZMQ_RECOVERY_IVL:
case ZMQ_SNDBUF: case ZMQ_SNDHWM: case ZMQ_SNDTIMEO:
case ZMQ_TCP_KEEPALIVE: case ZMQ_TCP_KEEPALIVE_CNT:
case ZMQ_TCP_KEEPALIVE_IDLE: case ZMQ_TCP_KEEPALIVE_INTVL:
case ZMQ_TCP_MAXRT: case ZMQ_THREAD_SAFE: case ZMQ_TOS: {
if (!(KNO_FIXNUMP(value)))
return kno_type_error("fixnum","zmq_setsockopt_prim",value);
void *valptr = (void *) (KNO_INT(value));
int rv = zmq_setsockopt(socket_ptr,optcode,valptr,sizeof(valptr));
if (rv == 0)
return KNO_TRUE;
else return zmq_error(KNO_SYMBOL_NAME(optname),socket);}
case ZMQ_VMCI_BUFFER_SIZE: case ZMQ_VMCI_BUFFER_MIN_SIZE:
case ZMQ_VMCI_BUFFER_MAX_SIZE:
case ZMQ_AFFINITY: case ZMQ_MAXMSGSIZE: {
if (!((KNO_FIXNUMP(value)) || (KNO_BIGINTP(value))))
return kno_type_error("integer","zmq_setsockopt_prim",value);
void *valptr = (void *) (KNO_INT(value));
int rv = zmq_setsockopt(socket_ptr,optcode,valptr,sizeof(valptr));
if (rv == 0)
return KNO_TRUE;
else return zmq_error(KNO_SYMBOL_NAME(optname),socket);}
case ZMQ_LAST_ENDPOINT:
case ZMQ_PLAIN_PASSWORD: case ZMQ_PLAIN_USERNAME:
case ZMQ_SOCKS_PROXY: case ZMQ_ZAP_DOMAIN: {
unsigned char *bytes; size_t sz;
if (KNO_STRINGP(value)) {
bytes = (unsigned char *) KNO_CSTRING(value);
sz = KNO_STRLEN(value);}
else if (KNO_SYMBOLP(value)) {
bytes = (unsigned char *) KNO_SYMBOL_NAME(value);
sz = strlen(bytes);}
else return kno_type_error("string","zmq_setsockopt_prim",value);
int rv = zmq_setsockopt(socket_ptr,optcode,bytes,sz);
if (rv == 0)
return KNO_TRUE;
else return zmq_error(KNO_SYMBOL_NAME(optname),socket);}
case ZMQ_ROUTING_ID:
case ZMQ_CURVE_PUBLICKEY: case ZMQ_CURVE_SECRETKEY: case ZMQ_CURVE_SERVERKEY: {
unsigned char *bytes = NULL; size_t sz;
if ( (KNO_PACKETP(value)) || (KNO_SECRETP(value)) ) {
bytes = (unsigned char *) KNO_PACKET_DATA(value);
sz = KNO_PACKET_LENGTH(value);
int rv = zmq_setsockopt(socket_ptr,optcode,bytes,sz);
if (rv == 0)
return KNO_TRUE;
else return KNO_FALSE;}
else return kno_type_error("packet",KNO_SYMBOL_NAME(optname),socket);}
default:
return KNO_FALSE;}
}
/* High level operations */
DEFC_PRIM("zmq/open",zmq_open_prim,
KNO_MAX_ARGS(2)|KNO_MIN_ARGS(2),
"Opens a ZMQ socket on an address",
{"address",kno_any_type,KNO_VOID},
{"typename",kno_any_type,KNO_VOID})
static lispval zmq_open_prim(lispval address,lispval typename)
{
void *ctx = KNO_ZMQ_CTX;
if (ctx == NULL)
return KNO_ERROR_VALUE;
int sock_type = get_socket_type(typename);
if (sock_type < 0)
return kno_err("InvalidZmqSocketType","zmq_socket_prim",NULL,typename);
if (!(KNO_STRINGP(address)))
return kno_err(kno_TypeError,"zmq_open_prim","address string",address);
void *sockptr = zmq_socket(ctx,sock_type);
if (sockptr == NULL)
return zmq_error("ZMQ/OPEN",address);
u8_string addr = KNO_CSTRING(address);
int rv = zmq_connect(sockptr,addr);
if (rv == 0)
return zmq_sockptr(sockptr,typename,address);
else {
zmq_close(sockptr);
return zmq_error("ZMQ/OPEN",address);}
}
DEFC_PRIM("zmq/listen",zmq_listen_prim,
KNO_MAX_ARGS(2)|KNO_MIN_ARGS(2),
"Opens a ZMQ socket on an address",
{"address",kno_any_type,KNO_VOID},
{"type",kno_any_type,KNO_VOID})
static lispval zmq_listen_prim(lispval address,lispval type)
{
void *ctx = KNO_ZMQ_CTX;
if (ctx == NULL)
return KNO_ERROR_VALUE;
int sock_type = get_socket_type(type);
if (sock_type < 0)
return kno_err("InvalidZmqSocketType","zmq_socket_prim",NULL,type);
if (!(KNO_STRINGP(address)))
return kno_err(kno_TypeError,"zmq_listen_prim","address string",address);
void *sockptr = zmq_socket(ctx,sock_type);
if (sockptr == NULL)
return zmq_error("ZMQ/LISTEN",address);
u8_string addr = KNO_CSTRING(address);
int rv = zmq_bind(sockptr,addr);
if (rv == 0)
return zmq_sockptr(sockptr,type,address);
else {
zmq_close(sockptr);
return zmq_error("ZMQ/LISTEN",address);}
}
/* Sending and receiving */
static void free_lisp_wrapper(void *data,void *vptr)
{
lispval val = (lispval) vptr;
kno_decref(val);
}
DEFC_PRIM("zmq/send!",zmq_send_prim,
KNO_MAX_ARGS(3)|KNO_MIN_ARGS(2),
"Sends a string or packet to a socket",
{"s",kno_any_type,KNO_VOID},
{"data",kno_any_type,KNO_VOID},
{"opts",kno_any_type,KNO_VOID})
static lispval zmq_send_prim(lispval s,lispval data,lispval opts)
{
ZMQ_CHECK_SOCK(s,"ZMQ/SEND!");
zmq_msg_t msg;
unsigned char *bytes; size_t len;
int flags = 0, free_bytes = 0, decref_data = 0, free_converter = 0;
lispval converter = VOID;
if (KNO_SYMBOLP(opts))
converter = opts;
else if (KNO_TABLEP(opts)) {
converter = kno_getopt(opts,convert_symbol,VOID);
if (KNO_CONSP(converter)) free_converter = 1;}
else NO_ELSE;
if (converter == KNOSYM_DTYPE) {
struct KNO_OUTBUF out = { 0 };
KNO_INIT_BYTE_OUTPUT(&out,2048);
len = kno_write_dtype(&out,data);
if (len < 0) {
kno_close_outbuf(&out);
return KNO_ERROR;}
else bytes = out.buffer;}
else if (KNO_PACKETP(data)) {
bytes = (unsigned char *) KNO_PACKET_DATA(data);
len = KNO_PACKET_LENGTH(data);
kno_incref(data);
decref_data = 1;}
else if (KNO_STRINGP(data)) {
bytes = (unsigned char *) KNO_CSTRING(data);
len = KNO_STRLEN(data);
kno_incref(data);
decref_data = 1;}
else return kno_err("string or packet","zmq_send_prim",NULL,data);
if (!((KNO_TRUEP(opts)) ||
( (KNO_TABLEP(opts)) && (kno_testopt(opts,wait_symbol,KNO_VOID)) ) ) )
flags |= ZMQ_DONTWAIT;
int rv = (decref_data) ?
(zmq_msg_init_data(&msg,bytes,len,free_lisp_wrapper,(void *)data)) :
(zmq_msg_init_data(&msg,bytes,len,NULL,NULL));
if (rv) {
if (free_bytes) u8_free(bytes);
if (free_converter) kno_decref(converter);
return zmq_error("ZMQ/SEND!",data);}
ssize_t n_bytes = zmq_msg_send(&msg,s_zmq->zmq_ptr,flags);
while ( (n_bytes < 0) && (errno == EAGAIN) ) {
errno = 0;
n_bytes = zmq_msg_send(&msg,s_zmq->zmq_ptr,flags);}
zmq_msg_close(&msg);
if (free_bytes) u8_free(bytes);
if (free_converter) kno_decref(converter);
if (n_bytes>=0) {
U8_CLEAR_ERRNO();
return KNO_INT(n_bytes);}
else return zmq_error("ZMQ/SEND!",s);
}
DEFC_PRIM("zmq/recv",zmq_recv_prim,
KNO_MAX_ARGS(2)|KNO_MIN_ARGS(1),
"Receives a packet from a socket",
{"s",kno_any_type,KNO_VOID},
{"opts",kno_any_type,KNO_VOID})
static lispval zmq_recv_prim(lispval s,lispval opts)
{
ZMQ_CHECK_SOCK(s,"ZMQ/RECV");
int flags = 0, wait = 1;
if ( (KNO_FALSEP(opts)) ||
( (KNO_TABLEP(opts)) && (kno_testopt(opts,nowait_symbol,KNO_VOID)) ) )
wait = 0;
if (!(wait)) flags |= ZMQ_DONTWAIT;
KNO_DECL_OUTBUF(out,1024);
int more = 1, n_parts = 0;
size_t more_size = sizeof (more);
while (more) {
/* Create an empty ØMQ message to hold the message part */
zmq_msg_t part;
int rc = zmq_msg_init (&part);
if (rc) {
kno_close_outbuf(&out);
return zmq_error("ZMQ/RECV(initmsg)",s);}
/* Wait for some data */
int part_len = zmq_msg_recv (&part, s_zmq->zmq_ptr, flags);
if ( part_len < 0 ) {
kno_close_outbuf(&out);
return zmq_error("ZMQ/RECV(recv)",s);}
/* Check if there's more */
rc = zmq_getsockopt (s_zmq->zmq_ptr, ZMQ_RCVMORE, &more, &more_size);
if (rc) {
kno_close_outbuf(&out);
return zmq_error("ZMQ/RECV(morep)",s);}
kno_write_bytes(&out,zmq_msg_data(&part),zmq_msg_size(&part));
zmq_msg_close (&part);
n_parts++;}
lispval converter = VOID; int free_converter = 0;
if ( (KNO_SYMBOLP(opts)) || (KNO_APPLICABLEP(opts)) )
converter = opts;
else if (KNO_TABLEP(opts)) {
converter = kno_getopt(opts,convert_symbol,VOID);
if (KNO_CONSP(converter)) free_converter = 1;}
else NO_ELSE;
lispval result = VOID;
unsigned char *bytes = out.buffer;
ssize_t n_bytes = out.bufwrite-out.buffer;
if ( converter == KNOSYM_PACKET )
result = kno_make_packet(NULL,n_bytes,bytes);
else if ( converter == KNOSYM_UTF8 )
result = kno_make_string(NULL,n_bytes,bytes);
else if ( converter == KNOSYM_STRING ) {
if (u8_validp(bytes))
result = kno_make_string(NULL,n_bytes,bytes);
else {
u8_log(LOGWARN,"ZMQ/RECV(non UTF-8 string)",
"Converting result to latin0");
u8_string converted = u8_make_string(latin0_encoding,bytes,bytes+n_bytes);
result = kno_init_string(NULL,-1,converted);}}
else if (KNO_STRINGP(converter)) {
u8_encoding enc = u8_get_encoding(KNO_CSTRING(converter));
if (enc) {
u8_string converted = u8_make_string(enc,bytes,bytes+n_bytes);
result = kno_init_string(NULL,-1,converted);}
else result =kno_err("Unknown character encoding","zmq_recv",
KNO_CSTRING(converter),s);}
else if (KNO_APPLICABLEP(converter)) {
lispval packet = kno_make_packet(NULL,n_bytes,bytes);
result = kno_apply(converter,1,&packet);
kno_decref(packet);}
else result = kno_make_packet(NULL,n_bytes,bytes);
kno_close_outbuf(&out);
if (free_converter) kno_decref(converter);
U8_CLEAR_ERRNO();
return result;
}
/* Utility functions */
DEFC_PRIM("zeromq?",zeromqp_prim,
KNO_MAX_ARGS(2)|KNO_MIN_ARGS(1),
"Returns true if *obj* is a ZeroMQ object with "
"type *type* (when provided) and #f otherwise.",
{"obj",kno_any_type,KNO_VOID},
{"typesym",kno_any_type,KNO_VOID})
static lispval zeromqp_prim(lispval obj,lispval typesym)
{
if (KNO_TYPEP(obj,kno_zmqsock_type)) {
if (!(KNO_SYMBOLP(typesym)))
return KNO_TRUE;
else {
struct KNO_ZMQSOCK *zmq = (kno_zmqsock) obj;
if (zmq->zmq_socktype == typesym)
return KNO_TRUE;
else return KNO_FALSE;}}
else return KNO_FALSE;
}
DEFC_PRIM("zmq/type",zeromq_type_prim,
KNO_MAX_ARGS(1)|KNO_MIN_ARGS(1),
"Returns the ZeroMQ type of *obj* or #f if it's "
"not a ZEROMQ object",
{"obj",kno_any_type,KNO_VOID})
static lispval zeromq_type_prim(lispval obj)
{
if (KNO_TYPEP(obj,kno_zmqsock_type)) {
struct KNO_ZMQSOCK *zmq = (kno_zmqsock) obj;
return zmq->zmq_socktype;}
else return KNO_FALSE;
}
/* Initializing the per-thread socket table */
static int init_zmq_sockets_per_thread = KNO_INIT_ZMQ_SOCKETS_PER_THREAD;
static kno_zmq_thread_data init_zmq_thread_data()
{
#if KNO_USE__THREAD
kno_zmq_thread_data sockets = kno_zmq_thread_data;
#else
kno_zmq_thread_data sockets = u8_tld_get(kno_zmq_thread_data_key);
#endif
if (sockets) {
if (((sockets)->data_for_thread) == (pthread_self()))
return sockets;
else {
kno_seterr("Thread/ZeroMQ_Error","init_zmq_thread_data",NULL,VOID);
return NULL;}}
ssize_t alloc_size = sizeof(struct KNO_ZMQ_THREAD_DATA) +
(sizeof(kno_zmqsock)*(init_zmq_sockets_per_thread-1));
sockets = u8_malloc(alloc_size); memset(sockets,0,alloc_size);
sockets->data_for_thread = pthread_self();
sockets->sockets_len = init_zmq_sockets_per_thread;
sockets->open_socket = 0;
sockets->last_socket = -1;
#if KNO_USE__THREAD
kno_zmq_thread_data = sockets;
#else
u8_tld_set(kno_zmq_thread_data_key,sockets);
#endif
return sockets;
}
/* Managing the per-thread socket table */
static kno_zmq_thread_data grow_zmq_thread_data(kno_zmq_thread_data perthread);
static ssize_t zmq_add_socket(struct KNO_ZMQSOCK *socket)
{
kno_zmq_thread_data info = get_zmq_thread_data();
if (info == NULL) {
kno_seterr("No thread-local sockets","zmq_add_socket",NULL,KNO_VOID);
return -1;}
struct KNO_ZMQSOCK **sockets = ZMQ_SOCKETS(info);
ssize_t off = -1;
if (info->open_socket < 0) {
/* Grow the table */
ssize_t len = info->sockets_len;
kno_zmq_thread_data new_info = grow_zmq_thread_data(info);
if (new_info) {
info = new_info;
off = len;}
else return -1;}
else off = info->open_socket;
/* Save the socket and the index it is stored at */
sockets[off] = socket;
socket->zmq_thread_off = off;
ssize_t i = off+1, len = info->sockets_len;
while ( (i < len) && (sockets[i]) ) i++;
if (i < len) {
info->open_socket = i;
if (off > info->last_socket)
info->last_socket = off;}
else info->open_socket = -1;
return off;
}
static ssize_t zmq_drop_socket(struct KNO_ZMQSOCK *socket)
{
kno_zmq_thread_data info = get_zmq_thread_data();
struct KNO_ZMQSOCK **sockets = ZMQ_SOCKETS(info);
ssize_t off = socket->zmq_thread_off;
if (off >= 0) {
struct KNO_ZMQSOCK *zmq = sockets[off];
if ( zmq != socket) {
u8_byte buf[128];
kno_seterr("CorruptedThreadSocketTable","zmq_drop_socket",
u8_bprintf(buf,"[@%llu] = 0x%llx != 0x%llx, not touching it",
off,zmq,socket),
(lispval)socket);
return -1;}
else {
sockets[off] = NULL;
if ( ( (info->open_socket) < 0) ||
( (off) < (info->open_socket) ) )
info->open_socket = off;
if ( off == info->last_socket ) {
ssize_t j = off-1;
while ( (j>=0) && (sockets[j]) ) j--;
info->last_socket = j;}}}
return 0;
}
static kno_zmq_thread_data grow_zmq_thread_data(kno_zmq_thread_data perthread)
{
ssize_t len = perthread->sockets_len;
ssize_t new_len = len + init_zmq_sockets_per_thread;
kno_zmq_thread_data new_perthread =
u8_zalloc(sizeof(struct KNO_ZMQ_THREAD_DATA)+
((sizeof(struct KNO_ZMQSOCK))*new_len));
if (new_perthread) {
memcpy(new_perthread,perthread,
sizeof(struct KNO_ZMQ_THREAD_DATA)+
((sizeof(struct KNO_ZMQSOCK))*len));
#if KNO_USE__THREAD
kno_zmq_thread_data = new_perthread;
#else
u8_tld_set(kno_zmq_thread_data_key,new_perthread);
#endif
u8_free(perthread);
return new_perthread;}
else {
u8_seterr(u8_MallocFailed,"grow_thread_table",NULL);
return NULL;}
}
/* Thread cleanup, closing sockets */
static void kno_zeromq_thread_cleanup()
{
/* If this hasn't been initalized, nothing could have been saved */
if (zeromq_init_ctx == NULL) return;
kno_zmq_thread_data info = get_zmq_thread_data();
if (info == NULL) return;
#if KNO_USE__THREAD
kno_zmq_thread_data = NULL;
#else
u8_tld_set(kno_zmq_thread_data_key,NULL);
#endif
ssize_t i = 0, end = info->last_socket;
if (end>=0)
u8_logf(LOG_DEBUG,"ZeroMQ/ThreadCleanup",
"%lld sockets for thread %lld",end,u8_threadid());
else u8_logf(LOG_DELUGE,"ZeroMQ/ThreadCleanup",
"%lld sockets for thread %lld",end,u8_threadid());
struct KNO_ZMQSOCK **sockets = ZMQ_SOCKETS(info);
while (i<=end) {
struct KNO_ZMQSOCK *zmq = sockets[i];
if (zmq == NULL) {i++; continue;}
else if (zmq->zmq_thread_off < 0) {}
else if (zmq->zmq_thread_off != i)
u8_log(LOGCRIT,"CorruptedZMQThreadInfo",
"%llx [%lld] != %lld",
zmq,i,zmq->zmq_thread_off);
else {
int one = 0;
int rv = zmq_setsockopt(zmq->zmq_ptr,ZMQ_LINGER,&one,sizeof(one));
if (rv<0) {
int err = errno; errno = 0; u8_string errstring = u8_strerror(err);
u8_log(LOG_ERROR,"SetSockOptFailed",
"%s on socket 0x%llx/0x%llx [%s] @%d, trying to close anyway",
errstring,zmq,zmq->zmq_ptr,zmq->zmq_id,i);
if (errno) errno=0;}
rv = zmq_close(zmq->zmq_ptr);
if (rv < 0) {
int err = errno; errno = 0; u8_string errstring = u8_strerror(err);
u8_log(LOG_ERROR,"ZMQCloseFailed",
"%s on socket 0x%llx/0x%llx [%s] @%d",
errstring,zmq,zmq->zmq_ptr,zmq->zmq_id,i);}
else u8_logf(LOG_DEBUG,"ZeroMQ/ThreadCleanup/Close",
"Closed %q in thread %lld",
(lispval)zmq,u8_threadid());}
zmq->zmq_thread_off = -1;
sockets[i] = NULL;
i++;}
u8_free(info);
}
/* The proxy function */
DEFC_PRIM("zmq/proxy!",zmq_proxy_prim,
KNO_MAX_ARGS(3)|KNO_MIN_ARGS(2),
"starts a synchronouse proxy passing messages from "
"*frontend* to *backend*. It terminates when the "
"zeromq context is closed. If provided, all "
"messages are also sent to *capture*. All "
"arguments should be ZMQ sockets.",
{"front_addr",KNO_ZMQSOCK_TYPE,KNO_VOID},
{"front_type",KNO_ZMQSOCK_TYPE,KNO_VOID},
{"back_addr",KNO_ZMQSOCK_TYPE,KNO_VOID})
static lispval zmq_proxy_prim(lispval front,lispval back,lispval capture)
{
int rv = zmq_proxy(ZMQ_SOCKPTR(front),ZMQ_SOCKPTR(back),
((TYPEP(capture,kno_zmqsock_type)) ?
(ZMQ_SOCKPTR(capture)) :
(NULL)));
if (rv < 0) {
int eno = errno; errno=0;
u8_log(LOGWARN,"ZMQ/PROXY/Exit","with errno=%d (%s)",
eno,zmq_strerror(eno));
return KNO_FALSE;}
else return KNO_FALSE;
}
#if 0
DEFC_PRIM("zmq/proxy!",zmq_proxy_prim,
KNO_MAX_ARGS(3)|KNO_MIN_ARGS(2),
"starts a synchronouse proxy passing messages from "
"*frontend* to *backend*. It terminates when the "
"zeromq context is closed. If provided, all "
"messages are also sent to *capture*. All "
"arguments should be ZMQ sockets.",
{"front_addr",kno_zmqsocket_type,KNO_VOID},