Annotation of embedaddon/bmon/src/output.c, revision 1.1
1.1 ! misho 1: /*
! 2: * output.c Output API
! 3: *
! 4: * Copyright (c) 2001-2005 Thomas Graf <tgraf@suug.ch>
! 5: *
! 6: * Permission is hereby granted, free of charge, to any person obtaining a
! 7: * copy of this software and associated documentation files (the "Software"),
! 8: * to deal in the Software without restriction, including without limitation
! 9: * the rights to use, copy, modify, merge, publish, distribute, sublicense,
! 10: * and/or sell copies of the Software, and to permit persons to whom the
! 11: * Software is furnished to do so, subject to the following conditions:
! 12: *
! 13: * The above copyright notice and this permission notice shall be included
! 14: * in all copies or substantial portions of the Software.
! 15: *
! 16: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
! 17: * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
! 18: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
! 19: * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
! 20: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
! 21: * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
! 22: * DEALINGS IN THE SOFTWARE.
! 23: */
! 24:
! 25: #include <bmon/bmon.h>
! 26: #include <bmon/output.h>
! 27: #include <bmon/conf.h>
! 28: #include <bmon/node.h>
! 29: #include <bmon/signal.h>
! 30: #include <bmon/utils.h>
! 31:
! 32: static struct output_module *reg_pri_list;
! 33: static struct output_module *reg_sec_list;
! 34: static struct output_module *preferred;
! 35:
! 36: static inline void
! 37: __regiter_output_module(struct output_module *ops, struct output_module **list)
! 38: {
! 39: ops->om_next = *list;
! 40: *list = ops;
! 41: }
! 42:
! 43: void register_output_module(struct output_module *ops)
! 44: {
! 45: __regiter_output_module(ops, ®_pri_list);
! 46: }
! 47:
! 48: void register_secondary_output_module(struct output_module *ops)
! 49: {
! 50: __regiter_output_module(ops, ®_sec_list);
! 51: }
! 52:
! 53: static inline struct output_module *
! 54: __get_output_module(const char *name, struct output_module *list)
! 55: {
! 56: struct output_module *i;
! 57:
! 58: for (i = list; i; i = i->om_next)
! 59: if (!strcmp(i->om_name, name))
! 60: return i;
! 61:
! 62: return NULL;
! 63: }
! 64:
! 65: static struct output_module * get_output_module(const char *name)
! 66: {
! 67: return __get_output_module(name, reg_pri_list);
! 68: }
! 69:
! 70: static struct output_module * get_sec_output_module(const char *name)
! 71: {
! 72: return __get_output_module(name, reg_sec_list);
! 73: }
! 74:
! 75: #define FOREACH_SOM(F) \
! 76: do { \
! 77: struct output_module *i; \
! 78: for (i = reg_sec_list; i; i = i->om_next) \
! 79: if (i->om_enable && i->om_##F) \
! 80: i->om_##F (); \
! 81: } while (0)
! 82:
! 83: const char * get_preferred_output_name(void)
! 84: {
! 85: return preferred ? preferred->om_name : "none";
! 86: }
! 87:
! 88: static void find_preferred(int quiet)
! 89: {
! 90: if (NULL == preferred)
! 91: preferred = get_output_module("curses");
! 92:
! 93: if (NULL == preferred)
! 94: preferred = get_output_module("ascii");
! 95:
! 96: if (NULL == preferred && !quiet)
! 97: quit("No output module found.\n");
! 98: }
! 99:
! 100: void output_init(void)
! 101: {
! 102: find_preferred(0);
! 103:
! 104: if (preferred->om_init)
! 105: preferred->om_init();
! 106:
! 107: FOREACH_SOM(init);
! 108: }
! 109:
! 110: void output_pre(void)
! 111: {
! 112: find_preferred(0);
! 113:
! 114: if (preferred->om_pre)
! 115: preferred->om_pre();
! 116:
! 117: FOREACH_SOM(pre);
! 118: }
! 119:
! 120: void output_draw(void)
! 121: {
! 122: if (get_signal_output())
! 123: if (!is_signal_recvd())
! 124: return;
! 125:
! 126: find_preferred(0);
! 127:
! 128: calc_node_rates();
! 129:
! 130: if (preferred->om_draw)
! 131: preferred->om_draw();
! 132:
! 133: FOREACH_SOM(draw);
! 134: }
! 135:
! 136: void output_post(void)
! 137: {
! 138: find_preferred(0);
! 139:
! 140: if (preferred->om_post)
! 141: preferred->om_post();
! 142:
! 143: FOREACH_SOM(post);
! 144: }
! 145:
! 146: void output_shutdown(void)
! 147: {
! 148: find_preferred(1);
! 149:
! 150: if (preferred && preferred->om_shutdown)
! 151: preferred->om_shutdown();
! 152:
! 153: FOREACH_SOM(shutdown);
! 154: }
! 155:
! 156: static void list_output(void)
! 157: {
! 158: struct output_module *o;
! 159:
! 160: printf("Output modules:\n");
! 161: if (NULL == reg_pri_list)
! 162: printf("\tNo output modules found.\n");
! 163: else
! 164: for (o = reg_pri_list; o; o = o->om_next)
! 165: printf("\t%s\n", o->om_name);
! 166: }
! 167:
! 168: void set_output(const char *name)
! 169: {
! 170: static int set = 0;
! 171: module_conf_t *ml, *m;
! 172:
! 173: if (set)
! 174: return;
! 175: set = 1;
! 176:
! 177: if (NULL == name || !strcasecmp(name, "list")) {
! 178: list_output();
! 179: exit(0);
! 180: }
! 181:
! 182: ml = parse_module_param(name);
! 183:
! 184: for (m = ml; m; m = m->next) {
! 185: preferred = get_output_module(ml->name);
! 186:
! 187: if (NULL == preferred)
! 188: continue;
! 189:
! 190: if (preferred->om_set_opts)
! 191: preferred->om_set_opts(ml->attrs);
! 192:
! 193: if (preferred->om_probe)
! 194: if (preferred->om_probe())
! 195: return;
! 196: }
! 197:
! 198: quit("No (working) output module found\n");
! 199: }
! 200:
! 201: static void list_sec_output(void)
! 202: {
! 203: struct output_module *o;
! 204:
! 205: printf("Secondary output modules:\n");
! 206: if (NULL == reg_sec_list)
! 207: printf("\tNo secondary output modules found.\n");
! 208: else
! 209: for (o = reg_sec_list; o; o = o->om_next)
! 210: printf("\t%s\n", o->om_name);
! 211: }
! 212:
! 213: void set_sec_output(const char *name)
! 214: {
! 215: module_conf_t *ml, *m;
! 216:
! 217: if (NULL == name || !strcasecmp(name, "list")) {
! 218: list_sec_output();
! 219: exit(0);
! 220: }
! 221:
! 222: ml = parse_module_param(name);
! 223:
! 224: for (m = ml; m; m = m->next) {
! 225: struct output_module *o = get_sec_output_module(m->name);
! 226:
! 227: if (NULL == o)
! 228: continue;
! 229:
! 230: if (o->om_set_opts)
! 231: o->om_set_opts(ml->attrs);
! 232:
! 233: if (o->om_probe) {
! 234: if (o->om_probe() == 1)
! 235: o->om_enable = 1;
! 236: }
! 237: }
! 238: }
! 239:
! 240: void output_resize(void)
! 241: {
! 242: find_preferred(0);
! 243:
! 244: if (preferred && preferred->om_resize)
! 245: preferred->om_resize();
! 246:
! 247: FOREACH_SOM(resize);
! 248: }
! 249:
! 250: int resized;
! 251:
! 252: int got_resized(void)
! 253: {
! 254: int ret = resized;
! 255: resized = 0;
! 256: return ret;
! 257: }
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