119 lines
2.4 KiB
C
119 lines
2.4 KiB
C
#include <assert.h>
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#include "uthash.h"
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#include "ovni.h"
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#include "ovni_trace.h"
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#include "emu.h"
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#include "prv.h"
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#include "chan.h"
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/* This module manages the nos-v subsystem (ss) events, to track which
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* actions are being performed by each thread at a given time. A stack
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* of states is stored in each thread, so we remember the path of
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* execution. Events such as task received by a thread are emitted as
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* fake events with very short period. */
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/* --------------------------- pre ------------------------------- */
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static void
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pre_sched(struct ovni_emu *emu)
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{
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struct ovni_ethread *th;
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struct ovni_chan *chan;
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th = emu->cur_thread;
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chan = &th->chan[CHAN_NOSV_SS];
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switch(emu->cur_ev->header.value)
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{
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case 'h':
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chan_push(chan, ST_SCHED_HUNGRY);
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break;
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case 'f': /* Fill: no longer hungry */
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chan_pop(chan, ST_SCHED_HUNGRY);
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break;
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case '[': /* Server enter */
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chan_push(chan, ST_SCHED_SERVING);
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break;
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case ']': /* Server exit */
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chan_pop(chan, ST_SCHED_SERVING);
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break;
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case '@': chan_ev(chan, EV_SCHED_SELF); break;
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case 'r': chan_ev(chan, EV_SCHED_RECV); break;
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case 's': chan_ev(chan, EV_SCHED_SEND); break;
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default:
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break;
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}
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}
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static void
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pre_submit(struct ovni_emu *emu)
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{
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struct ovni_ethread *th;
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struct ovni_chan *chan;
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th = emu->cur_thread;
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chan = &th->chan[CHAN_NOSV_SS];
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switch(emu->cur_ev->header.value)
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{
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case '[': chan_push(chan, ST_SCHED_SUBMITTING); break;
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case ']': chan_pop(chan, ST_SCHED_SUBMITTING); break;
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default:
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break;
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}
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}
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static void
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pre_memory(struct ovni_emu *emu)
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{
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struct ovni_ethread *th;
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struct ovni_chan *chan;
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th = emu->cur_thread;
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chan = &th->chan[CHAN_NOSV_SS];
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switch(emu->cur_ev->header.value)
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{
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case '[': chan_push(chan, ST_MEM_ALLOCATING); break;
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case ']': chan_pop(chan, ST_MEM_ALLOCATING); break;
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default:
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break;
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}
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}
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void
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hook_pre_nosv_ss(struct ovni_emu *emu)
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{
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assert(emu->cur_ev->header.model == 'V');
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switch(emu->cur_ev->header.class)
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{
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case 'S': pre_sched(emu); break;
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case 'U': pre_submit(emu); break;
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case 'M': pre_memory(emu); break;
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default:
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break;
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}
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}
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/* --------------------------- emit ------------------------------- */
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void
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hook_emit_nosv_ss(struct ovni_emu *emu)
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{
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struct ovni_ethread *th;
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struct ovni_chan *chan;
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th = emu->cur_thread;
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chan_emit(&th->chan[CHAN_NOSV_SS]);
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}
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/* --------------------------- post ------------------------------- */
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void
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hook_post_nosv_ss(struct ovni_emu *emu)
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{
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}
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