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--- contrib/libs/grpc/src/core/lib/event_engine/thread_pool.cc (1c9f99d6c38355a4a99b04e59c154a9ae9cb2d58)
+++ contrib/libs/grpc/src/core/lib/event_engine/thread_pool.cc (working tree)
@@ -33,7 +33,8 @@
#include "src/core/lib/event_engine/thread_local.h"
#include "src/core/lib/gprpp/thd.h"
#include "src/core/lib/gprpp/time.h"
-
+#include "src/core/lib/gprpp/env.h"
+#include "src/core/lib/gpr/string.h"
namespace {
size_t threads_limit_ = 0;
}
@@ -41,6 +42,17 @@ namespace {
namespace grpc_event_engine {
namespace experimental {
+size_t GetMaxPoolThreadFromEnv() {
+ auto value = grpc_core::GetEnv("GRPC_MAX_THREADS_THREAD_POOL_ENV");
+ if (!value.has_value()) return 0;
+ int parse_succeeded = gpr_parse_nonnegative_int(value->c_str());
+
+ if (parse_succeeded <= 0) {
+ return 0;
+ }
+ return static_cast<size_t>(parse_succeeded);
+}
+
size_t ThreadPool::SetThreadsLimit(size_t count) {
size_t prev = threads_limit_;
threads_limit_ = count;
@@ -50,11 +62,19 @@ size_t ThreadPool::SetThreadsLimit(size_t count) {
unsigned ThreadPool::GetMaxSystemThread() {
unsigned max_threads = grpc_core::Clamp(gpr_cpu_num_cores(), 2u, 32u);
+ auto threads_limit_env = GetMaxPoolThreadFromEnv();
+ if (threads_limit_env) {
+ unsigned new_max_threads = std::min(max_threads, static_cast<unsigned>(threads_limit_env));
+ gpr_log(GPR_INFO, "Threads limit changed via env from %u to %u", max_threads, new_max_threads);
+ max_threads = new_max_threads;
+ }
+
if (threads_limit_) {
unsigned new_max_threads = std::min(max_threads, static_cast<unsigned>(threads_limit_));
gpr_log(GPR_INFO, "Threads limit changed from %u to %u", max_threads, new_max_threads);
max_threads = new_max_threads;
}
+ gpr_log(GPR_INFO, "Threads limit:[%u]", max_threads);
return max_threads;
}
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