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Improve conn termination: Close children asap if there is no parent, close parent asap if there is no child

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pull/13/head
Soner Tari 7 years ago
parent ad1f95e465
commit 4f6b207e57
2 changed files with 49 additions and 13 deletions
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56
pxyconn.c
Unescape Escape View File

@ -1823,6 +1823,11 @@ pxy_conn_is_ready_to_free(pxy_conn_ctx_t *ctx)
goto not_ready;
}
if ((!src_outbuf_empty && !src_closed) || (!e2src_outbuf_empty && !e2src_closed)) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: (!src_outbuf_empty && !src_closed) || (!e2src_outbuf_empty && !e2src_closed) fd=%d\n", ctx->fd);
goto not_ready;
}
// if (src_closed && e2src_closed && !ctx->initialized) {
// log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: src_closed && e2src_closed && !ctx->initialized fd=%d\n", ctx->fd);
// goto ready;
@ -1957,23 +1962,31 @@ pxy_conn_is_ready_to_free_e2(pxy_conn_ctx_t *ctx)
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: dst_outbuf NOT EMPTY fd=%d\n", ctx->fd);
}
pxy_conn_ctx_t *parent_ctx = parent_ctx = ctx->mctx->parent_ctx;
// Start of decisions
if (e2_closed && !e2_inbuf_empty && !dst_closed) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: e2_closed && !e2_inbuf_empty && !dst_closed fd=%d\n", ctx->fd);
// if (e2_closed && !e2_inbuf_empty && !dst_closed) {
if ((e2_closed || !parent_ctx) && !e2_inbuf_empty && !dst_closed) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: (e2_closed || !parent_ctx) && !e2_inbuf_empty && !dst_closed fd=%d\n", ctx->fd);
struct evbuffer *e2dst_inbuf = bufferevent_get_input(e2dst->bev);
struct evbuffer *dst_outbuf = bufferevent_get_output(dst->bev);
evbuffer_add_buffer(dst_outbuf, e2dst_inbuf);
goto not_ready;
}
if (dst_closed && !dst_inbuf_empty && !e2_closed) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: dst_closed && !dst_inbuf_empty && !e2_closed fd=%d\n", ctx->fd);
if ((dst_closed || !parent_ctx) && !dst_inbuf_empty && !e2_closed) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: (dst_closed || !parent_ctx) && !dst_inbuf_empty && !e2_closed fd=%d\n", ctx->fd);
struct evbuffer *dst_inbuf = bufferevent_get_input(dst->bev);
struct evbuffer *e2dst_outbuf = bufferevent_get_output(e2dst->bev);
evbuffer_add_buffer(e2dst_outbuf, dst_inbuf);
goto not_ready;
}
if ((!e2_outbuf_empty && !e2_closed) || (!dst_outbuf_empty && !dst_closed)) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: (!e2_outbuf_empty && !e2_closed) || (!dst_outbuf_empty && !dst_closed) fd=%d\n", ctx->fd);
goto not_ready;
}
// int src_closed = 1;
// int e2src_closed = 1;
//
@ -1986,7 +1999,7 @@ pxy_conn_is_ready_to_free_e2(pxy_conn_ctx_t *ctx)
// ((src_closed || e2src_closed) && e2_inbuf_empty && e2_outbuf_empty && dst_inbuf_empty && dst_outbuf_empty) ||
// !parent_ctx) {
// if ((e2_closed && dst_closed) || (e2_closed && dst_inbuf_empty && dst_outbuf_empty) || (dst_closed && e2_inbuf_empty && e2_outbuf_empty)) {
if ((e2_closed && dst_closed) || (e2_closed && dst_outbuf_empty) || (dst_closed && e2_outbuf_empty)) {
if ((e2_closed && dst_closed) || (e2_closed && dst_outbuf_empty) || (dst_closed && e2_outbuf_empty) || !parent_ctx) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: other conditions fd=%d\n", ctx->fd);
// ctx->dst_eof = 1;
// ctx->e2dst_eof = 1;
@ -2106,6 +2119,13 @@ pxy_conn_free_e2(pxy_conn_ctx_t *ctx, int free)
pxy_conn_ctx_free_e2(ctx);
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free_e2: FREED CTX, fd=%d, parent fd=%d\n", fd, pfd);
if (parent_ctx) {
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free_e2: RETRY freeing parent, fd=%d, parent fd=%d\n", fd, pfd);
if (rv = pxy_conn_free(parent_ctx)) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free_e2: FREE parent SUCCESS, fd=%d, parent fd=%d\n", fd, pfd);
}
}
return rv;
} else {
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free_e2: CANNOT FREE CTX, fd=%d, parent fd=%d\n", fd, pfd);
@ -2158,6 +2178,8 @@ pxy_conn_free(pxy_conn_ctx_t *ctx)
assert(ctx != NULL);
assert(ctx->mctx != NULL);
proxy_conn_meta_ctx_t *mctx = ctx->mctx;
int fd = ctx->fd;
int cfd = -1;
@ -2170,13 +2192,13 @@ pxy_conn_free(pxy_conn_ctx_t *ctx)
// @todo Should we try to free child ctxs, or should they be cleaned up by the expired conns list?
// if (ctx->initialized) {
pxy_conn_ctx_t *current = ctx->mctx->child_ctx;
while (current) {
pxy_conn_ctx_t *next = current->child_ctx;
if (pxy_conn_free_e2(current, 0)) {
pxy_conn_ctx_t *child_ctx = ctx->mctx->child_ctx;
while (child_ctx) {
pxy_conn_ctx_t *next = child_ctx->child_ctx;
if (pxy_conn_free_e2(child_ctx, 0)) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free: FREE child SUCCESS, fd=%d, child fd=%d\n", fd, cfd);
}
current = next;
child_ctx = next;
}
// }
@ -2221,6 +2243,18 @@ pxy_conn_free(pxy_conn_ctx_t *ctx)
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free: FREEING ctx, fd=%d, child fd=%d\n", fd, cfd);
pxy_conn_ctx_free(ctx);
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free: FREED CTX, fd=%d, child fd=%d\n", fd, cfd);
child_ctx = mctx->child_ctx;
if (child_ctx) {
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free: RETRY freeing children, fd=%d, child fd=%d\n", fd, cfd);
while (child_ctx) {
pxy_conn_ctx_t *next = child_ctx->child_ctx;
if (rv = pxy_conn_free_e2(child_ctx, 0)) {
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free: FREE child SUCCESS, fd=%d, child fd=%d\n", fd, cfd);
}
child_ctx = next;
}
}
return rv;
} else {
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free: CANNOT FREE CTX, fd=%d, child fd=%d\n", fd, cfd);
@ -3015,7 +3049,7 @@ pxy_bev_writecb_e2(struct bufferevent *bev, void *arg)
// }
// if (src_eof || e2src_eof || ctx->e2dst_eof || ctx->dst_eof) {
if (ctx->e2dst_eof || ctx->dst_eof) {
if (ctx->e2dst_eof || ctx->dst_eof || !parent_ctx) {
// log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>??????????????????????????? pxy_bev_writecb_e2: 1+ EOF ASSUME e2dst EOF: %d\n", fd);
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>??????????????????????????? pxy_bev_writecb_e2: TRY CLOSING CHILD fd=%d\n", fd);
rv = pxy_conn_free_e2(ctx, 0);

6
pxythrmgr.c
Unescape Escape View File

@ -391,8 +391,9 @@ pxy_thrmgr_detach_e2(pxy_thrmgr_ctx_t *ctx, int thridx, proxy_conn_meta_ctx_t *m
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_thrmgr_detach_e2()\n");
pthread_mutex_lock(&ctx->mutex);
// log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_thrmgr_detach_e2(): BEFORE pxy_thrmgr_remove_node\n");
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_thrmgr_detach_e2(): BEFORE pxy_thrmgr_remove_node\n");
// pxy_thrmgr_print_thr_info(ctx);
pxy_thrmgr_print_thr_info(ctx->thr[thridx]);
ctx->thr[thridx]->load--;
@ -409,8 +410,9 @@ pxy_thrmgr_detach_e2(pxy_thrmgr_ctx_t *ctx, int thridx, proxy_conn_meta_ctx_t *m
}
}
// log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>> pxy_thrmgr_detach_e2(): AFTER pxy_thrmgr_remove_node\n");
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>> pxy_thrmgr_detach_e2(): AFTER pxy_thrmgr_remove_node\n");
// pxy_thrmgr_print_thr_info(ctx);
pxy_thrmgr_print_thr_info(ctx->thr[thridx]);
pthread_mutex_unlock(&ctx->mutex);
}

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