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-rw-r--r--src/lib/CMakeLists.txt4
-rw-r--r--src/lib/dev.c371
-rw-r--r--src/lib/frct_enroll.proto32
-rw-r--r--src/lib/tpm.c266
4 files changed, 348 insertions, 325 deletions
diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
index e08869b8..75eac6f9 100644
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -11,7 +11,6 @@ protobuf_generate_c(DIF_CONFIG_PROTO_SRCS DIF_CONFIG_PROTO_HDRS
protobuf_generate_c(CDAP_PROTO_SRCS CDAP_PROTO_HDRS cdap.proto)
protobuf_generate_c(RO_PROTO_SRCS RO_PROTO_HDRS ro.proto)
protobuf_generate_c(CACEP_PROTO_SRCS CACEP_PROTO_HDRS cacep.proto)
-protobuf_generate_c(FRCT_ENROLL_SRCS FRCT_ENROLL_HDRS frct_enroll.proto)
if (NOT APPLE)
find_library(LIBRT_LIBRARIES rt)
@@ -59,12 +58,13 @@ set(SOURCE_FILES
shm_rdrbuff.c
sockets.c
time_utils.c
+ tpm.c
utils.c
)
add_library(ouroboros SHARED ${SOURCE_FILES} ${IRM_PROTO_SRCS}
${IPCP_PROTO_SRCS} ${DIF_CONFIG_PROTO_SRCS} ${CDAP_PROTO_SRCS}
- ${CACEP_PROTO_SRCS} ${RO_PROTO_SRCS} ${FRCT_ENROLL_SRCS})
+ ${CACEP_PROTO_SRCS} ${RO_PROTO_SRCS})
include(AddCompileFlags)
if (CMAKE_BUILD_TYPE MATCHES Debug)
diff --git a/src/lib/dev.c b/src/lib/dev.c
index 14971528..c8e43778 100644
--- a/src/lib/dev.c
+++ b/src/lib/dev.c
@@ -85,7 +85,6 @@ struct flow {
struct {
char * ap_name;
- char * daf_name;
pid_t api;
struct shm_rdrbuff * rdrb;
@@ -205,7 +204,7 @@ static int api_announce(char * ap_name)
return ret;
}
-static void init_flow(int fd)
+static void flow_clear(int fd)
{
assert(!(fd < 0));
@@ -216,9 +215,9 @@ static void init_flow(int fd)
ai.flows[fd].cube = QOS_CUBE_BE;
}
-static void reset_flow(int fd)
+static void flow_fini(int fd)
{
- assert (!(fd < 0));
+ assert(!(fd < 0));
if (ai.flows[fd].port_id != -1)
port_destroy(&ai.ports[ai.flows[fd].port_id]);
@@ -232,7 +231,59 @@ static void reset_flow(int fd)
if (ai.flows[fd].set != NULL)
shm_flow_set_close(ai.flows[fd].set);
- init_flow(fd);
+ flow_clear(fd);
+}
+
+static int flow_init(int port_id,
+ pid_t api,
+ qoscube_t qc)
+{
+ int fd;
+
+ pthread_rwlock_wrlock(&ai.flows_lock);
+
+ fd = bmp_allocate(ai.fds);
+ if (!bmp_is_id_valid(ai.fds, fd)) {
+ pthread_rwlock_unlock(&ai.flows_lock);
+ return -EBADF;
+ }
+
+ ai.flows[fd].rx_rb = shm_rbuff_open(ai.api, port_id);
+ if (ai.flows[fd].rx_rb == NULL) {
+ bmp_release(ai.fds, fd);
+ pthread_rwlock_unlock(&ai.flows_lock);
+ return -ENOMEM;
+ }
+
+ ai.flows[fd].tx_rb = shm_rbuff_open(api, port_id);
+ if (ai.flows[fd].tx_rb == NULL) {
+ flow_fini(fd);
+ bmp_release(ai.fds, fd);
+ pthread_rwlock_unlock(&ai.flows_lock);
+ return -ENOMEM;
+ }
+
+ ai.flows[fd].set = shm_flow_set_open(api);
+ if (ai.flows[fd].set == NULL) {
+ flow_fini(fd);
+ bmp_release(ai.fds, fd);
+ pthread_rwlock_unlock(&ai.flows_lock);
+ return -ENOMEM;
+ }
+
+ ai.flows[fd].port_id = port_id;
+ ai.flows[fd].oflags = FLOW_O_DEFAULT;
+ ai.flows[fd].api = api;
+ ai.flows[fd].cube = qc;
+ ai.flows[fd].spec = qos_cube_to_spec(qc);
+
+ ai.ports[port_id].fd = fd;
+
+ port_set_state(&ai.ports[port_id], PORT_ID_ASSIGNED);
+
+ pthread_rwlock_unlock(&ai.flows_lock);
+
+ return fd;
}
int ouroboros_init(const char * ap_name)
@@ -242,7 +293,6 @@ int ouroboros_init(const char * ap_name)
assert(ai.ap_name == NULL);
ai.api = getpid();
- ai.daf_name = NULL;
ai.fds = bmp_create(AP_MAX_FLOWS - AP_RES_FDS, AP_RES_FDS);
if (ai.fds == NULL)
@@ -279,7 +329,7 @@ int ouroboros_init(const char * ap_name)
}
for (i = 0; i < AP_MAX_FLOWS; ++i)
- init_flow(i);
+ flow_clear(i);
ai.ports = malloc(sizeof(*ai.ports) * IRMD_MAX_FLOWS);
if (ai.ports == NULL) {
@@ -333,9 +383,6 @@ void ouroboros_fini()
shm_flow_set_destroy(ai.fqset);
- if (ai.daf_name != NULL)
- free(ai.daf_name);
-
if (ai.ap_name != NULL)
free(ai.ap_name);
@@ -346,7 +393,7 @@ void ouroboros_fini()
ssize_t idx;
while ((idx = shm_rbuff_read(ai.flows[i].rx_rb)) >= 0)
shm_rdrbuff_remove(ai.rdrb, idx);
- reset_flow(i);
+ flow_fini(i);
}
}
@@ -368,13 +415,9 @@ void ouroboros_fini()
int flow_accept(qosspec_t * qs,
const struct timespec * timeo)
{
- irm_msg_t msg = IRM_MSG__INIT;
- irm_msg_t * recv_msg = NULL;
- int fd = -1;
- frct_enroll_msg_t * frct_enroll;
- qosspec_t spec;
- uint8_t data[BUF_SIZE];
- ssize_t n;
+ irm_msg_t msg = IRM_MSG__INIT;
+ irm_msg_t * recv_msg = NULL;
+ int fd = -1;
msg.code = IRM_MSG_CODE__IRM_FLOW_ACCEPT;
msg.has_api = true;
@@ -408,83 +451,15 @@ int flow_accept(qosspec_t * qs,
return -EIRMD;
}
- pthread_rwlock_wrlock(&ai.flows_lock);
-
- fd = bmp_allocate(ai.fds);
- if (!bmp_is_id_valid(ai.fds, fd)) {
- pthread_rwlock_unlock(&ai.flows_lock);
- irm_msg__free_unpacked(recv_msg, NULL);
- return -EBADF;
- }
-
- ai.flows[fd].rx_rb = shm_rbuff_open(ai.api, recv_msg->port_id);
- if (ai.flows[fd].rx_rb == NULL) {
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- irm_msg__free_unpacked(recv_msg, NULL);
- return -ENOMEM;
- }
-
- ai.flows[fd].tx_rb = shm_rbuff_open(recv_msg->api, recv_msg->port_id);
- if (ai.flows[fd].tx_rb == NULL) {
- reset_flow(fd);
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- irm_msg__free_unpacked(recv_msg, NULL);
- return -ENOMEM;
- }
-
- ai.flows[fd].set = shm_flow_set_open(recv_msg->api);
- if (ai.flows[fd].set == NULL) {
- reset_flow(fd);
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- irm_msg__free_unpacked(recv_msg, NULL);
- return -ENOMEM;
- }
-
- ai.flows[fd].port_id = recv_msg->port_id;
- ai.flows[fd].oflags = FLOW_O_DEFAULT;
- ai.flows[fd].api = recv_msg->api;
- ai.flows[fd].cube = recv_msg->qoscube;
-
- assert(ai.ports[ai.flows[fd].port_id].state == PORT_INIT);
-
- spec = qos_cube_to_spec(recv_msg->qoscube);
-
- ai.ports[recv_msg->port_id].fd = fd;
- ai.ports[recv_msg->port_id].state = PORT_ID_ASSIGNED;
-
- pthread_rwlock_unlock(&ai.flows_lock);
+ fd = flow_init(recv_msg->port_id, recv_msg->api, recv_msg->qoscube);
irm_msg__free_unpacked(recv_msg, NULL);
- n = flow_read(fd, data, BUF_SIZE);
- if (n < 0) {
- flow_dealloc(fd);
- return n;
- }
-
- frct_enroll = frct_enroll_msg__unpack(NULL, n, data);
- if (frct_enroll == NULL) {
- flow_dealloc(fd);
- return -1;
- }
-
- spec.resource_control = frct_enroll->resource_control;
- spec.reliable = frct_enroll->reliable;
- spec.error_check = frct_enroll->error_check;
- spec.ordered = frct_enroll->ordered;
- spec.partial = frct_enroll->partial;
-
- frct_enroll_msg__free_unpacked(frct_enroll, NULL);
-
- pthread_rwlock_wrlock(&ai.flows_lock);
- ai.flows[fd].spec = spec;
- pthread_rwlock_unlock(&ai.flows_lock);
+ if (fd < 0)
+ return fd;
if (qs != NULL)
- *qs = spec;
+ *qs = ai.flows[fd].spec;
return fd;
}
@@ -493,14 +468,10 @@ int flow_alloc(const char * dst_name,
qosspec_t * qs,
const struct timespec * timeo)
{
- irm_msg_t msg = IRM_MSG__INIT;
- frct_enroll_msg_t frct_enroll = FRCT_ENROLL_MSG__INIT;
- irm_msg_t * recv_msg = NULL;
- qoscube_t qc = QOS_CUBE_BE;
- int fd;
- ssize_t len;
- uint8_t * data;
- int ret;
+ irm_msg_t msg = IRM_MSG__INIT;
+ irm_msg_t * recv_msg = NULL;
+ qoscube_t qc = QOS_CUBE_BE;
+ int fd;
msg.code = IRM_MSG_CODE__IRM_FLOW_ALLOC;
msg.dst_name = (char *) dst_name;
@@ -508,15 +479,8 @@ int flow_alloc(const char * dst_name,
msg.has_qoscube = true;
msg.api = ai.api;
- if (qs != NULL) {
- frct_enroll.resource_control = qs->resource_control;
- frct_enroll.reliable = qs->reliable;
- frct_enroll.error_check = qs->error_check;
- frct_enroll.ordered = qs->ordered;
- frct_enroll.partial = qs->partial;
-
+ if (qs != NULL)
qc = qos_spec_to_cube(*qs);
- }
msg.qoscube = qc;
@@ -547,78 +511,10 @@ int flow_alloc(const char * dst_name,
return -EIRMD;
}
- pthread_rwlock_wrlock(&ai.flows_lock);
-
- fd = bmp_allocate(ai.fds);
- if (!bmp_is_id_valid(ai.fds, fd)) {
- pthread_rwlock_unlock(&ai.flows_lock);
- irm_msg__free_unpacked(recv_msg, NULL);
- return -EBADF;
- }
-
- ai.flows[fd].rx_rb = shm_rbuff_open(ai.api, recv_msg->port_id);
- if (ai.flows[fd].rx_rb == NULL) {
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- irm_msg__free_unpacked(recv_msg, NULL);
- return -ENOMEM;
- }
-
- ai.flows[fd].tx_rb = shm_rbuff_open(recv_msg->api, recv_msg->port_id);
- if (ai.flows[fd].tx_rb == NULL) {
- reset_flow(fd);
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- irm_msg__free_unpacked(recv_msg, NULL);
- return -ENOMEM;
- }
-
- ai.flows[fd].set = shm_flow_set_open(recv_msg->api);
- if (ai.flows[fd].set == NULL) {
- reset_flow(fd);
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- irm_msg__free_unpacked(recv_msg, NULL);
- return -ENOMEM;
- }
-
- ai.flows[fd].port_id = recv_msg->port_id;
- ai.flows[fd].oflags = FLOW_O_DEFAULT;
- ai.flows[fd].api = recv_msg->api;
- ai.flows[fd].cube = recv_msg->qoscube;
-
- assert(ai.ports[recv_msg->port_id].state == PORT_INIT);
-
- ai.ports[recv_msg->port_id].fd = fd;
- ai.ports[recv_msg->port_id].state = PORT_ID_ASSIGNED;
+ fd = flow_init(recv_msg->port_id, recv_msg->api, qc);
irm_msg__free_unpacked(recv_msg, NULL);
- pthread_rwlock_unlock(&ai.flows_lock);
-
- len = frct_enroll_msg__get_packed_size(&frct_enroll);
- if (len < 0) {
- flow_dealloc(fd);
- return -1;
- }
-
- data = malloc(len);
- if (data == NULL) {
- flow_dealloc(fd);
- return -ENOMEM;
- }
-
- frct_enroll_msg__pack(&frct_enroll, data);
-
- ret = flow_write(fd, data, len);
- if (ret < 0) {
- flow_dealloc(fd);
- free(data);
- return ret;
- }
-
- free(data);
-
return fd;
}
@@ -657,7 +553,7 @@ int flow_dealloc(int fd)
pthread_rwlock_wrlock(&ai.flows_lock);
- reset_flow(fd);
+ flow_fini(fd);
bmp_release(ai.fds, fd);
pthread_rwlock_unlock(&ai.flows_lock);
@@ -1073,53 +969,11 @@ int flow_event_wait(struct flow_set * set,
/* ipcp-dev functions */
-int np1_flow_alloc(pid_t n_api,
- int port_id)
+int np1_flow_alloc(pid_t n_api,
+ int port_id,
+ qoscube_t qc)
{
- int fd;
-
- pthread_rwlock_wrlock(&ai.flows_lock);
-
- fd = bmp_allocate(ai.fds);
- if (!bmp_is_id_valid(ai.fds, fd)) {
- pthread_rwlock_unlock(&ai.flows_lock);
- return -1;
- }
-
- ai.flows[fd].rx_rb = shm_rbuff_open(ai.api, port_id);
- if (ai.flows[fd].rx_rb == NULL) {
- reset_flow(fd);
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- return -1;
- }
-
- ai.flows[fd].tx_rb = shm_rbuff_open(n_api, port_id);
- if (ai.flows[fd].tx_rb == NULL) {
- reset_flow(fd);
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- return -1;
- }
-
- ai.flows[fd].set = shm_flow_set_open(n_api);
- if (ai.flows[fd].set == NULL) {
- reset_flow(fd);
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- return -1;
- }
-
- ai.flows[fd].port_id = port_id;
- ai.flows[fd].oflags = FLOW_O_DEFAULT;
- ai.flows[fd].api = n_api;
-
- ai.ports[port_id].fd = fd;
- ai.ports[port_id].state = PORT_ID_ASSIGNED;
-
- pthread_rwlock_unlock(&ai.flows_lock);
-
- return fd;
+ return flow_init(port_id, n_api, qc);
}
int np1_flow_dealloc(int port_id)
@@ -1182,11 +1036,10 @@ int ipcp_create_r(pid_t api,
int ipcp_flow_req_arr(pid_t api,
const uint8_t * dst,
size_t len,
- qoscube_t cube)
+ qoscube_t qc)
{
irm_msg_t msg = IRM_MSG__INIT;
irm_msg_t * recv_msg = NULL;
- int port_id = -1;
int fd = -1;
if (dst == NULL)
@@ -1199,88 +1052,24 @@ int ipcp_flow_req_arr(pid_t api,
msg.hash.len = len;
msg.hash.data = (uint8_t *) dst;
msg.has_qoscube = true;
- msg.qoscube = cube;
-
- pthread_rwlock_wrlock(&ai.flows_lock);
-
- fd = bmp_allocate(ai.fds);
- if (!bmp_is_id_valid(ai.fds, fd)) {
- pthread_rwlock_unlock(&ai.flows_lock);
- return -1; /* -ENOMOREFDS */
- }
-
- pthread_rwlock_unlock(&ai.flows_lock);
+ msg.qoscube = qc;
recv_msg = send_recv_irm_msg(&msg);
- pthread_rwlock_wrlock(&ai.flows_lock);
-
- if (recv_msg == NULL) {
- ai.ports[fd].state = PORT_INIT;
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
+ if (recv_msg == NULL)
return -EIRMD;
- }
if (!recv_msg->has_port_id || !recv_msg->has_api) {
- ai.ports[fd].state = PORT_INIT;
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
irm_msg__free_unpacked(recv_msg, NULL);
return -1;
}
if (recv_msg->has_result && recv_msg->result) {
- ai.ports[fd].state = PORT_INIT;
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- irm_msg__free_unpacked(recv_msg, NULL);
- return -1;
- }
-
- port_id = recv_msg->port_id;
- if (port_id < 0) {
- ai.ports[fd].state = PORT_INIT;
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
irm_msg__free_unpacked(recv_msg, NULL);
return -1;
}
- ai.flows[fd].rx_rb = shm_rbuff_open(ai.api, port_id);
- if (ai.flows[fd].rx_rb == NULL) {
- reset_flow(fd);
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- irm_msg__free_unpacked(recv_msg, NULL);
- return -1;
- }
-
- ai.flows[fd].tx_rb = shm_rbuff_open(recv_msg->api, port_id);
- if (ai.flows[fd].tx_rb == NULL) {
- reset_flow(fd);
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- irm_msg__free_unpacked(recv_msg, NULL);
- return -1;
- }
-
- ai.flows[fd].set = shm_flow_set_open(recv_msg->api);
- if (ai.flows[fd].set == NULL) {
- reset_flow(fd);
- bmp_release(ai.fds, fd);
- pthread_rwlock_unlock(&ai.flows_lock);
- irm_msg__free_unpacked(recv_msg, NULL);
- return -1;
- }
-
- ai.flows[fd].port_id = port_id;
- ai.flows[fd].oflags = FLOW_O_DEFAULT;
-
- ai.ports[port_id].fd = fd;
- port_set_state(&ai.ports[port_id], PORT_ID_ASSIGNED);
-
- pthread_rwlock_unlock(&ai.flows_lock);
+ fd = flow_init(recv_msg->port_id, recv_msg->api, qc);
irm_msg__free_unpacked(recv_msg, NULL);
diff --git a/src/lib/frct_enroll.proto b/src/lib/frct_enroll.proto
deleted file mode 100644
index 497d6acc..00000000
--- a/src/lib/frct_enroll.proto
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Ouroboros - Copyright (C) 2016 - 2017
- *
- * QoS messages
- *
- * Dimitri Staessens <dimitri.staessens@intec.ugent.be>
- * Sander Vrijders <sander.vrijders@intec.ugent.be>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * version 2.1 as published by the Free Software Foundation.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
-
-syntax = "proto2";
-
-message frct_enroll_msg {
- required bool resource_control = 1;
- required bool reliable = 2;
- required bool error_check = 3;
- required bool ordered = 4;
- required bool partial = 5;
-};
diff --git a/src/lib/tpm.c b/src/lib/tpm.c
new file mode 100644
index 00000000..8298eeb5
--- /dev/null
+++ b/src/lib/tpm.c
@@ -0,0 +1,266 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * Threadpool management
+ *
+ * Dimitri Staessens <dimitri.staessens@ugent.be>
+ * Sander Vrijders <sander.vrijders@ugent.be>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * version 2.1 as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <ouroboros/config.h>
+#include <ouroboros/errno.h>
+#include <ouroboros/list.h>
+#include <ouroboros/time_utils.h>
+#include <ouroboros/tpm.h>
+
+#include <pthread.h>
+#include <stdlib.h>
+
+#define TPM_TIMEOUT 1000
+
+struct pthr_el {
+ struct list_head next;
+
+ bool join;
+
+ pthread_t thr;
+};
+
+enum tpm_state {
+ TPM_NULL = 0,
+ TPM_INIT,
+ TPM_RUNNING
+};
+
+struct {
+ size_t min;
+ size_t inc;
+ size_t max;
+ size_t cur;
+
+ void * (* func)(void *);
+
+ struct list_head pool;
+
+ enum tpm_state state;
+
+ pthread_cond_t cond;
+ pthread_mutex_t lock;
+
+ pthread_t mgr;
+} tpm;
+
+static void tpm_join(void)
+{
+ struct list_head * p;
+ struct list_head * h;
+
+ list_for_each_safe(p, h, &tpm.pool) {
+ struct pthr_el * e = list_entry(p, struct pthr_el, next);
+ if (tpm.state != TPM_RUNNING)
+ while (!e->join)
+ pthread_cond_wait(&tpm.cond, &tpm.lock);
+
+ if (e->join) {
+ pthread_join(e->thr, NULL);
+ list_del(&e->next);
+ free(e);
+ }
+ }
+}
+
+static void * tpmgr(void * o)
+{
+ struct timespec dl;
+ struct timespec to = {(TPM_TIMEOUT / 1000),
+ (TPM_TIMEOUT % 1000) * MILLION};
+ (void) o;
+
+ while (true) {
+ clock_gettime(PTHREAD_COND_CLOCK, &dl);
+ ts_add(&dl, &to, &dl);
+
+ pthread_mutex_lock(&tpm.lock);
+
+ tpm_join();
+
+ if (tpm.state != TPM_RUNNING) {
+ tpm.max = 0;
+ tpm_join();
+ pthread_mutex_unlock(&tpm.lock);
+ break;
+ }
+
+ if (tpm.cur < tpm.min) {
+ tpm.max = tpm.inc;
+
+ while (tpm.cur < tpm.max) {
+ struct pthr_el * e = malloc(sizeof(*e));
+ if (e == NULL)
+ break;
+
+ e->join = false;
+
+ if (pthread_create(&e->thr, NULL,
+ tpm.func, NULL)) {
+ free(e);
+ } else {
+ list_add(&e->next, &tpm.pool);
+ ++tpm.cur;
+ }
+ }
+ }
+
+ if (pthread_cond_timedwait(&tpm.cond, &tpm.lock, &dl)
+ == ETIMEDOUT)
+ if (tpm.cur > tpm.min )
+ --tpm.max;
+
+ pthread_mutex_unlock(&tpm.lock);
+ }
+
+ return (void *) 0;
+}
+
+int tpm_init(size_t min,
+ size_t inc,
+ void * (* func)(void *))
+{
+ pthread_condattr_t cattr;
+
+ if (pthread_mutex_init(&tpm.lock, NULL))
+ goto fail_lock;
+
+ if (pthread_condattr_init(&cattr))
+ goto fail_cattr;
+
+#ifndef __APPLE__
+ pthread_condattr_setclock(&cattr, PTHREAD_COND_CLOCK);
+#endif
+ if (pthread_cond_init(&tpm.cond, &cattr))
+ goto fail_cond;
+
+ list_head_init(&tpm.pool);
+
+ pthread_condattr_destroy(&cattr);
+
+ tpm.state = TPM_INIT;
+ tpm.func = func;
+ tpm.min = min;
+ tpm.inc = inc;
+ tpm.max = 0;
+ tpm.cur = 0;
+
+ return 0;
+
+ fail_cond:
+ pthread_condattr_destroy(&cattr);
+ fail_cattr:
+ pthread_mutex_destroy(&tpm.lock);
+ fail_lock:
+ return -1;
+}
+
+int tpm_start(void)
+{
+ pthread_mutex_lock(&tpm.lock);
+
+ if (pthread_create(&tpm.mgr, NULL, tpmgr, NULL)) {
+ pthread_mutex_unlock(&tpm.lock);
+ return -1;
+ }
+
+ tpm.state = TPM_RUNNING;
+
+ pthread_mutex_unlock(&tpm.lock);
+
+ return 0;
+}
+
+void tpm_stop(void)
+{
+ pthread_mutex_lock(&tpm.lock);
+
+ tpm.state = TPM_NULL;
+
+ pthread_mutex_unlock(&tpm.lock);
+}
+
+void tpm_fini(void)
+{
+ pthread_join(tpm.mgr, NULL);
+
+ pthread_mutex_destroy(&tpm.lock);
+ pthread_cond_destroy(&tpm.cond);
+}
+
+bool tpm_check(void)
+{
+ bool ret;
+
+ pthread_mutex_lock(&tpm.lock);
+
+ ret = tpm.cur > tpm.max;
+
+ pthread_mutex_unlock(&tpm.lock);
+
+ return ret;
+}
+
+void tpm_inc(void)
+{
+ pthread_mutex_lock(&tpm.lock);
+
+ ++tpm.cur;
+
+ pthread_mutex_unlock(&tpm.lock);
+}
+
+void tpm_dec(void)
+{
+ pthread_mutex_lock(&tpm.lock);
+
+ --tpm.cur;
+
+ pthread_cond_signal(&tpm.cond);
+
+ pthread_mutex_unlock(&tpm.lock);
+}
+
+void tpm_exit(void)
+{
+ struct list_head * p;
+ pthread_t id;
+
+ id = pthread_self();
+
+ pthread_mutex_lock(&tpm.lock);
+
+ --tpm.cur;
+
+ list_for_each(p, &tpm.pool) {
+ struct pthr_el * e = list_entry(p, struct pthr_el, next);
+ if (e->thr == id) {
+ e->join = true;
+ break;
+ }
+ }
+
+ pthread_cond_signal(&tpm.cond);
+
+ pthread_mutex_unlock(&tpm.lock);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-07 10:35:31 +0000