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[njs] Stream: improved vm events handling.

Dmitry Volyntsev
November 25, 2020 06:10AM
details: https://hg.nginx.org/njs/rev/0684301385d9
branches:
changeset: 1570:0684301385d9
user: Dmitry Volyntsev <xeioex@nginx.com>
date: Wed Nov 25 10:47:25 2020 +0000
description:
Stream: improved vm events handling.

diffstat:

nginx/ngx_stream_js_module.c | 54 ++++++++++++++++++++++---------------------
1 files changed, 28 insertions(+), 26 deletions(-)

diffs (126 lines):

diff -r e51da8c71f26 -r 0684301385d9 nginx/ngx_stream_js_module.c
--- a/nginx/ngx_stream_js_module.c Fri Nov 20 12:29:30 2020 +0300
+++ b/nginx/ngx_stream_js_module.c Wed Nov 25 10:47:25 2020 +0000
@@ -48,8 +48,10 @@ typedef struct {
ngx_chain_t *busy;
ngx_stream_session_t *session;
ngx_int_t status;
- njs_vm_event_t upload_event;
- njs_vm_event_t download_event;
+#define NGX_JS_EVENT_UPLOAD 0
+#define NGX_JS_EVENT_DOWNLOAD 1
+#define NGX_JS_EVENT_MAX 2
+ njs_vm_event_t events[2];
unsigned from_upstream:1;
unsigned filter:1;
unsigned in_progress:1;
@@ -73,6 +75,7 @@ static ngx_int_t ngx_stream_js_body_filt
static ngx_int_t ngx_stream_js_variable(ngx_stream_session_t *s,
ngx_stream_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_stream_js_init_vm(ngx_stream_session_t *s);
+static void ngx_stream_js_drop_events(ngx_stream_js_ctx_t *ctx);
static void ngx_stream_js_cleanup_ctx(void *data);
static void ngx_stream_js_cleanup_vm(void *data);
static njs_int_t ngx_stream_js_buffer_arg(ngx_stream_session_t *s,
@@ -441,7 +444,7 @@ ngx_stream_js_phase_handler(ngx_stream_s
}
}

- if (ctx->upload_event != NULL) {
+ if (ctx->events[NGX_JS_EVENT_UPLOAD] != NULL) {
ret = ngx_stream_js_buffer_arg(s, njs_value_arg(&ctx->args[1]));
if (ret != NJS_OK) {
goto exception;
@@ -452,7 +455,7 @@ ngx_stream_js_phase_handler(ngx_stream_s
goto exception;
}

- njs_vm_post_event(ctx->vm, ctx->upload_event,
+ njs_vm_post_event(ctx->vm, ctx->events[NGX_JS_EVENT_UPLOAD],
njs_value_arg(&ctx->args[1]), 2);

rc = njs_vm_run(ctx->vm);
@@ -463,7 +466,7 @@ ngx_stream_js_phase_handler(ngx_stream_s

if (njs_vm_pending(ctx->vm)) {
ctx->in_progress = 1;
- rc = ctx->upload_event ? NGX_AGAIN : NGX_DONE;
+ rc = ctx->events[NGX_JS_EVENT_UPLOAD] ? NGX_AGAIN : NGX_DONE;

} else {
ctx->in_progress = 0;
@@ -487,7 +490,8 @@ exception:


#define ngx_stream_event(from_upstream) \
- (from_upstream ? ctx->download_event : ctx->upload_event)
+ (from_upstream ? ctx->events[NGX_JS_EVENT_DOWNLOAD] \
+ : ctx->events[NGX_JS_EVENT_UPLOAD])


static ngx_int_t
@@ -720,19 +724,25 @@ ngx_stream_js_init_vm(ngx_stream_session


static void
+ngx_stream_js_drop_events(ngx_stream_js_ctx_t *ctx)
+{
+ ngx_uint_t i;
+
+ for (i = 0; i < NGX_JS_EVENT_MAX; i++) {
+ if (ctx->events[i] != NULL) {
+ njs_vm_del_event(ctx->vm, ctx->events[i]);
+ ctx->events[i] = NULL;
+ }
+ }
+}
+
+
+static void
ngx_stream_js_cleanup_ctx(void *data)
{
ngx_stream_js_ctx_t *ctx = data;

- if (ctx->upload_event != NULL) {
- njs_vm_del_event(ctx->vm, ctx->upload_event);
- ctx->upload_event = NULL;
- }
-
- if (ctx->download_event != NULL) {
- njs_vm_del_event(ctx->vm, ctx->download_event);
- ctx->download_event = NULL;
- }
+ ngx_stream_js_drop_events(ctx);

if (njs_vm_pending(ctx->vm)) {
ngx_log_error(NGX_LOG_ERR, ctx->log, 0, "pending events");
@@ -840,10 +850,10 @@ ngx_stream_js_event(ngx_stream_session_t
}

if (i == 0) {
- return &ctx->upload_event;
+ return &ctx->events[NGX_JS_EVENT_UPLOAD];
}

- return &ctx->download_event;
+ return &ctx->events[NGX_JS_EVENT_DOWNLOAD];
}


@@ -911,15 +921,7 @@ ngx_stream_js_ext_done(njs_vm_t *vm, njs

ctx->status = status;

- if (ctx->upload_event != NULL) {
- njs_vm_del_event(ctx->vm, ctx->upload_event);
- ctx->upload_event = NULL;
- }
-
- if (ctx->download_event != NULL) {
- njs_vm_del_event(ctx->vm, ctx->download_event);
- ctx->download_event = NULL;
- }
+ ngx_stream_js_drop_events(ctx);

njs_value_undefined_set(njs_vm_retval(vm));

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[njs] Stream: improved vm events handling.

Dmitry Volyntsev 92 November 25, 2020 06:10AM



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