[ios,macos,android,qt] use shared threadpool

3 files changed, 28 insertions, 1 deletions

diff --git a/platform/default/mbgl/util/default_thread_pool.cpp b/platform/default/mbgl/util/default_thread_pool.cpp
index 92c0f06745..d3950bb8aa 100644
--- a/platform/default/mbgl/util/default_thread_pool.cpp
+++ b/platform/default/mbgl/util/default_thread_pool.cpp
@@ -1,12 +1,16 @@
 #include <mbgl/util/default_thread_pool.hpp>
 #include <mbgl/actor/mailbox.hpp>
+#include <mbgl/util/platform.hpp>
+#include <mbgl/util/string.hpp>
 
 namespace mbgl {
 
 ThreadPool::ThreadPool(std::size_t count) {
     threads.reserve(count);
     for (std::size_t i = 0; i < count; ++i) {
-        threads.emplace_back([this] () {
+        threads.emplace_back([this, i]() {
+            platform::setCurrentThreadName(std::string{ "Worker " } + util::toString(i + 1));
+
             while (true) {
                 std::unique_lock<std::mutex> lock(mutex);
 
diff --git a/platform/default/mbgl/util/shared_thread_pool.cpp b/platform/default/mbgl/util/shared_thread_pool.cpp
new file mode 100644
index 0000000000..7a42df21de
--- /dev/null
+++ b/platform/default/mbgl/util/shared_thread_pool.cpp
@@ -0,0 +1,14 @@
+#include "shared_thread_pool.hpp"
+
+namespace mbgl {
+
+std::shared_ptr<ThreadPool> sharedThreadPool() {
+    static std::weak_ptr<ThreadPool> weak;
+    auto pool = weak.lock();
+    if (!pool) {
+        weak = pool = std::make_shared<ThreadPool>(4);
+    }
+    return pool;
+}
+
+} // namespace mbgl
diff --git a/platform/default/mbgl/util/shared_thread_pool.hpp b/platform/default/mbgl/util/shared_thread_pool.hpp
new file mode 100644
index 0000000000..04a3cb58d5
--- /dev/null
+++ b/platform/default/mbgl/util/shared_thread_pool.hpp
@@ -0,0 +1,9 @@
+#pragma once
+
+#include <mbgl/util/default_thread_pool.hpp>
+
+namespace mbgl {
+
+std::shared_ptr<ThreadPool> sharedThreadPool();
+
+} // namespace mbgl