diff options
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/CMakeLists.txt | 4 | ||||
| -rw-r--r-- | src/lib/dev.c | 371 | ||||
| -rw-r--r-- | src/lib/frct_enroll.proto | 32 | ||||
| -rw-r--r-- | src/lib/tpm.c | 266 |
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 <[email protected]> - * Sander Vrijders <[email protected]> - * - * 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 <[email protected]> + * Sander Vrijders <[email protected]> + * + * 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); +} |