1 files changed, 152 insertions, 0 deletions
diff --git a/src/irmd/reg/ipcp.c b/src/irmd/reg/ipcp.c
new file mode 100644
index 00000000..62505871
--- /dev/null
+++ b/src/irmd/reg/ipcp.c
@@ -0,0 +1,152 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - IPCPs
+ *
+ *    Dimitri Staessens <[email protected]>
+ *    Sander Vrijders   <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#if defined(__linux__) || defined(__CYGWIN__)
+#define _DEFAULT_SOURCE
+#else
+#define _POSIX_C_SOURCE 200809L
+#endif
+
+#include "config.h"
+
+#include <ouroboros/errno.h>
+#include <ouroboros/hash.h>
+#include <ouroboros/ipcp.h>
+#include <ouroboros/pthread.h>
+#include <ouroboros/time_utils.h>
+
+#include "ipcp.h"
+
+#include <assert.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct reg_ipcp * reg_ipcp_create(const char *   name,
+                                  enum ipcp_type type)
+{
+        struct reg_ipcp *  ipcp;
+        pthread_condattr_t cattr;
+
+        ipcp = malloc(sizeof(*ipcp));
+        if (ipcp == NULL)
+                goto fail_malloc;
+
+        if (pthread_mutex_init(&ipcp->mtx, NULL))
+                goto fail_mutex;
+
+        if (pthread_condattr_init(&cattr))
+                goto fail_cattr;
+#ifndef __APPLE__
+        pthread_condattr_setclock(&cattr, PTHREAD_COND_CLOCK);
+#endif
+        if (pthread_cond_init(&ipcp->cond, &cattr))
+                goto fail_cond;
+
+        ipcp->name = strdup(name);
+        if (ipcp->name == NULL)
+                goto fail_name;
+
+        pthread_condattr_destroy(&cattr);
+
+        ipcp->layer = NULL;
+        ipcp->type  = type;
+        ipcp->state = IPCP_BOOT;
+
+        list_head_init(&ipcp->next);
+
+        return ipcp;
+
+ fail_name:
+        pthread_cond_destroy(&ipcp->cond);
+ fail_cond:
+        pthread_condattr_destroy(&cattr);
+ fail_cattr:
+        pthread_mutex_destroy(&ipcp->mtx);
+ fail_mutex:
+        free(ipcp);
+ fail_malloc:
+        return NULL;
+}
+
+void reg_ipcp_destroy(struct reg_ipcp * ipcp)
+{
+        assert(ipcp);
+
+        pthread_mutex_lock(&ipcp->mtx);
+
+        while (ipcp->state == IPCP_BOOT)
+                pthread_cond_wait(&ipcp->cond, &ipcp->mtx);
+
+        free(ipcp->layer);
+        free(ipcp->name);
+
+        pthread_mutex_unlock(&ipcp->mtx);
+
+        pthread_cond_destroy(&ipcp->cond);
+        pthread_mutex_destroy(&ipcp->mtx);
+
+        free(ipcp);
+}
+
+void reg_ipcp_set_state(struct reg_ipcp * ipcp,
+                        enum ipcp_state   state)
+{
+        pthread_mutex_lock(&ipcp->mtx);
+
+        ipcp->state = state;
+        pthread_cond_broadcast(&ipcp->cond);
+
+        pthread_mutex_unlock(&ipcp->mtx);
+}
+
+int reg_ipcp_wait_boot(struct reg_ipcp * ipcp)
+{
+        int             ret = 0;
+        struct timespec dl;
+        struct timespec to = {SOCKET_TIMEOUT / 1000,
+                              (SOCKET_TIMEOUT % 1000) * MILLION};
+
+        clock_gettime(PTHREAD_COND_CLOCK, &dl);
+        ts_add(&dl, &to, &dl);
+
+        pthread_mutex_lock(&ipcp->mtx);
+
+        while (ipcp->state == IPCP_BOOT && ret != ETIMEDOUT)
+                ret = pthread_cond_timedwait(&ipcp->cond, &ipcp->mtx, &dl);
+
+        if (ret == ETIMEDOUT) {
+                kill(ipcp->pid, SIGTERM);
+                ipcp->state = IPCP_NULL;
+                pthread_cond_signal(&ipcp->cond);
+        }
+
+        if (ipcp->state != IPCP_LIVE) {
+                pthread_mutex_unlock(&ipcp->mtx);
+                return -1;
+        }
+
+        pthread_mutex_unlock(&ipcp->mtx);
+
+        return 0;
+}