forked from backup/30dayMakeOS
27 lines
383 B
C
27 lines
383 B
C
/* 多任务管理 */
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#include "bootpack.h"
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struct TIMER *mt_timer;
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int mt_tr;
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void mt_init(void)
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{
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mt_timer = timer_alloc();
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/*这里没有必要使用timer_init */
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timer_settime(mt_timer, 2);
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mt_tr = 3 * 8;
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return;
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}
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void mt_taskswitch(void)
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{
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if (mt_tr == 3 * 8) {
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mt_tr = 4 * 8;
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} else {
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mt_tr = 3 * 8;
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}
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timer_settime(mt_timer, 2);
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farjmp(0, mt_tr);
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return;
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} |