1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/*
* Copyright (c) 2013 Hugh Bailey <obs.jim@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "../util/darray.h"
#include "../util/threading.h"
#include "decl.h"
#include "proc.h"
struct proc_info {
struct decl_info func;
void *data;
proc_handler_proc_t callback;
};
static inline void proc_info_free(struct proc_info *pi)
{
decl_info_free(&pi->func);
}
struct proc_handler {
/* TODO: replace with hash table lookup? */
pthread_mutex_t mutex;
DARRAY(struct proc_info) procs;
};
static struct proc_info *getproc(proc_handler_t *handler, const char *name)
{
for (size_t i = 0; i < handler->procs.num; i++) {
struct proc_info *info = handler->procs.array + i;
if (strcmp(info->func.name, name) == 0) {
return info;
}
}
return NULL;
}
/* ------------------------------------------------------------------------- */
proc_handler_t *proc_handler_create(void)
{
struct proc_handler *handler = bmalloc(sizeof(struct proc_handler));
if (pthread_mutex_init_recursive(&handler->mutex) != 0) {
blog(LOG_ERROR, "Couldn't create proc_handler mutex");
bfree(handler);
return NULL;
}
da_init(handler->procs);
return handler;
}
void proc_handler_destroy(proc_handler_t *handler)
{
if (!handler)
return;
for (size_t i = 0; i < handler->procs.num; i++)
proc_info_free(handler->procs.array + i);
da_free(handler->procs);
pthread_mutex_destroy(&handler->mutex);
bfree(handler);
}
void proc_handler_add(proc_handler_t *handler, const char *decl_string,
proc_handler_proc_t proc, void *data)
{
if (!handler)
return;
struct proc_info pi;
memset(&pi, 0, sizeof(struct proc_info));
if (!parse_decl_string(&pi.func, decl_string)) {
blog(LOG_ERROR, "Function declaration invalid: %s",
decl_string);
return;
}
pi.callback = proc;
pi.data = data;
pthread_mutex_lock(&handler->mutex);
struct proc_info *existing = getproc(handler, pi.func.name);
if (existing) {
blog(LOG_WARNING, "Procedure '%s' already exists",
pi.func.name);
proc_info_free(&pi);
} else {
da_push_back(handler->procs, &pi);
}
pthread_mutex_unlock(&handler->mutex);
}
bool proc_handler_call(proc_handler_t *handler, const char *name,
calldata_t *params)
{
if (!handler)
return false;
pthread_mutex_lock(&handler->mutex);
struct proc_info *info = getproc(handler, name);
struct proc_info info_copy;
if (info)
info_copy = *info;
pthread_mutex_unlock(&handler->mutex);
if (!info)
return false;
info_copy.callback(info_copy.data, params);
return true;
}
|
