SL-16400: Add ThreadPool::start() method, and call it.

It's sometimes important to finish other initialization before launching the
threads in the ThreadPool, so make that an explicit step. In particular, we
were launching the LLImageGL texture thread before initializing the GL
context, resulting in all gray textures.

1 files changed, 7 insertions, 3 deletions

diff --git a/indra/llcommon/threadpool.cpp b/indra/llcommon/threadpool.cpp
index 06e0dc5bfc..ba914035e2 100644
--- a/indra/llcommon/threadpool.cpp
+++ b/indra/llcommon/threadpool.cpp
@@ -23,11 +23,15 @@
 
 LL::ThreadPool::ThreadPool(const std::string& name, size_t threads, size_t capacity):
     mQueue(name, capacity),
-    mName("ThreadPool:" + name)
+    mName("ThreadPool:" + name),
+    mThreadCount(threads)
+{}
+
+void LL::ThreadPool::start()
 {
-    for (size_t i = 0; i < threads; ++i)
+    for (size_t i = 0; i < mThreadCount; ++i)
     {
-        std::string tname{ STRINGIZE(mName << ':' << (i+1) << '/' << threads) };
+        std::string tname{ stringize(mName, ':', (i+1), '/', mThreadCount) };
         mThreads.emplace_back(tname, [this, tname]()
             {
                 LL_PROFILER_SET_THREAD_NAME(tname.c_str());