diff --git a/CMakeLists.txt b/CMakeLists.txt
index 359c8a51..1cb48acf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -104,7 +104,6 @@ list (
 ##-----------------------------------------------------------------------------
 if (LINUX)
     list (APPEND UTIL_FILES
-        thread/thread_std.hpp
         thread/event_futex.cpp
         thread/flag_futex.cpp
         rand/system_linux.cpp
@@ -174,41 +173,30 @@ endif ()
 
 ###############################################################################
 list (APPEND UTIL_FILES
-    thread/condition_variable.hpp
     thread/event.hpp
     thread/flag.hpp
-    thread/mutex.hpp
     thread/primitive.hpp
     thread/semaphore.hpp
-    thread/thread.hpp
 )
 
 if (LINUX)
     list (APPEND UTIL_FILES
-        thread/condition_variable_std.hpp
         thread/event_futex.cpp
         thread/event_futex.hpp
         thread/semaphore_linux.hpp
         thread/semaphore_linux.cpp
         thread/flag_futex.cpp
         thread/flag_futex.hpp
-        thread/mutex_std.hpp
     )
 elseif (WIN32)
     list (APPEND UTIL_FILES
-        thread/condition_variable_win32.cpp
-        thread/condition_variable_win32.hpp
         thread/event_std.cpp
         thread/event_std.hpp
         thread/event_win32.cpp
-        thread/mutex_win32.cpp
-        thread/mutex_win32.hpp
         thread/semaphore_win32.hpp
         thread/semaphore_win32.cpp
         thread/flag_std.cpp
         thread/flag_std.hpp
-        thread/thread_win32.cpp
-        thread/thread_win32.hpp
     )
 else ()
     message (FATAL_ERROR "Unsupported thread platform")
@@ -537,7 +525,6 @@ list (
     thread/flag.hpp
     thread/monitor.cpp
     thread/monitor.hpp
-    thread/mutex.hpp
     thread/ticketlock.cpp
     thread/ticketlock.hpp
     thread/spinlock.cpp
@@ -740,15 +727,12 @@ if (TESTS)
         stringid
         stringcache
         strongdef
-        thread/condition_variable
         thread/event
         thread/flag
         thread/monitor
-        thread/mutex
         thread/semaphore
         thread/spinlock
         thread/ticketlock
-        thread/thread
         time/8601
         traits
         tuple/index
diff --git a/README.adoc b/README.adoc
index a2084d38..3ca9adf0 100644
--- a/README.adoc
+++ b/README.adoc
@@ -2,7 +2,9 @@
 
 A simple cross-platform C++ utility library.
 
-Supported compilers: >=clang-5.x, >=gcc7.x; specifically, we require cxx17 features such as structured bindings which aren't present in older compilers. No attempt has been made to compile under MSVC.
+Supported compilers: >=clang-10.x, >=gcc10.x; specifically, we require cxx17 features such as structured bindings which aren't present in older compilers. No attempt has been made to compile under MSVC.
+
+MinGW must be compiled with PThreads support so that the std threading API is available.
 
 === Environment Variables
 
diff --git a/job/queue.cpp b/job/queue.cpp
index 49c20ae6..10ff9f11 100644
--- a/job/queue.cpp
+++ b/job/queue.cpp
@@ -27,7 +27,7 @@ queue::default_parallelism (void) noexcept
         LOG_ERROR ("Unable to parse JOB_THREADS. Using the default");
     }
 
-    return cruft::thread::thread::hardware_concurrency ();
+    return std::thread::hardware_concurrency ();
 }
 
 
@@ -62,7 +62,7 @@ queue::queue (unsigned thread_count, unsigned pool_size):
     CHECK_GE (m_tasks.finishing.capacity (), thread_count);
 
     for (auto &t: m_threads)
-        t = cruft::thread::thread (&queue::loop, this);
+        t = std::thread (&queue::loop, this);
 }
 
 
diff --git a/job/queue.hpp b/job/queue.hpp
index 97aeb00b..9c668f44 100644
--- a/job/queue.hpp
+++ b/job/queue.hpp
@@ -14,7 +14,6 @@
 #include "../thread/flag.hpp"
 #include "../thread/monitor.hpp"
 #include "../thread/semaphore.hpp"
-#include "../thread/thread.hpp"
 #include "../thread/ticketlock.hpp"
 
 #include "../parallel/queue.hpp"
@@ -25,6 +24,7 @@
 #include <functional>
 #include <new>
 #include <vector>
+#include <thread>
 
 
 namespace cruft::job {
@@ -201,10 +201,10 @@ namespace cruft::job {
 
         thread::semaphore m_pending;
 
-        std::vector<thread::thread> m_threads;
+        std::vector<std::thread> m_threads;
 
         thread::semaphore m_doomed;
-        thread::thread m_reaper;
+        std::thread m_reaper;
     };
 }
 
diff --git a/test/job/queue.cpp b/test/job/queue.cpp
index e1245439..dcfd278b 100644
--- a/test/job/queue.cpp
+++ b/test/job/queue.cpp
@@ -1,11 +1,10 @@
 ///////////////////////////////////////////////////////////////////////////////
 #include "job/queue.hpp"
-#include "thread/thread.hpp"
 #include "tap.hpp"
 
 #include <chrono>
-
 #include <iostream>
+#include <thread>
 
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -33,7 +32,7 @@ main (void)
         std::atomic<int> count = 0;
 
         {
-            cruft::job::queue q {cruft::thread::thread::hardware_concurrency (), INNER};
+            cruft::job::queue q {std::thread::hardware_concurrency (), INNER};
             std::vector<cruft::job::queue::cookie> cookies;
             std::generate_n (std::back_inserter (cookies), INNER, [&] () {
                 return q.submit (
diff --git a/test/parallel/queue.cpp b/test/parallel/queue.cpp
index efa48b81..8b9cae0e 100644
--- a/test/parallel/queue.cpp
+++ b/test/parallel/queue.cpp
@@ -1,12 +1,13 @@
 #include "parallel/queue.hpp"
 #include "thread/flag.hpp"
 #include "thread/semaphore.hpp"
-#include "thread/thread.hpp"
 
 #include "tap.hpp"
 
 #include <algorithm>
 
+#include <thread>
+
 
 static constexpr uint32_t slots = 4;
 static constexpr int parallelism = 8;
@@ -65,8 +66,8 @@ main ()
 
     // start n consumers, and n producers that fill an array with integers
     std::vector<int> dst (parallelism * chunk_size);
-    std::vector<cruft::thread::thread> consumers;
-    std::vector<cruft::thread::thread> producers;
+    std::vector<std::thread> consumers;
+    std::vector<std::thread> producers;
 
     for (int i = 0; i < parallelism; ++i) {
         consumers.emplace_back (
diff --git a/test/parallel/stack.cpp b/test/parallel/stack.cpp
index d36a5129..e2b2ed44 100644
--- a/test/parallel/stack.cpp
+++ b/test/parallel/stack.cpp
@@ -1,9 +1,9 @@
 #include "thread/flag.hpp"
-#include "thread/thread.hpp"
 #include "parallel/stack.hpp"
 
 #include "tap.hpp"
 
+#include <thread>
 
 
 int main ()
@@ -57,8 +57,8 @@ int main ()
         static int constexpr ITERATIONS = 8 * 1024;
         cruft::parallel::stack<int> store (8);
         cruft::thread::flag ev;
-        std::vector<cruft::thread::thread> contestants;
-        for (unsigned i = 0; i < cruft::thread::thread::hardware_concurrency () + 1; ++i)
+        std::vector<std::thread> contestants;
+        for (unsigned i = 0; i < std::thread::hardware_concurrency () + 1; ++i)
             contestants.emplace_back (fight, std::ref (store), std::ref (ev), ITERATIONS);
 
         ev.notify_all ();
diff --git a/test/thread/condition_variable.cpp b/test/thread/condition_variable.cpp
deleted file mode 100644
index 483b70ba..00000000
--- a/test/thread/condition_variable.cpp
+++ /dev/null
@@ -1,4 +0,0 @@
-int main ()
-{
-
-}
\ No newline at end of file
diff --git a/test/thread/event.cpp b/test/thread/event.cpp
index 55b338a9..4253089d 100644
--- a/test/thread/event.cpp
+++ b/test/thread/event.cpp
@@ -1,9 +1,9 @@
 #include "thread/event.hpp"
-#include "thread/thread.hpp"
 
 #include "tap.hpp"
 
 #include <atomic>
+#include <thread>
 
 
 int
@@ -20,14 +20,14 @@ main ()
     std::atomic<int> val = 0;
     cruft::thread::event a;
 
-    cruft::thread::thread t ([&] () {
+    std::thread t ([&] () {
         a.wait ();
         ++val;
     });
 
     // block for hopefully long enough to allow the above thread to change
     // the value of the integer.
-    cruft::thread::this_thread::sleep_for (std::chrono::milliseconds (100));
+    std::this_thread::sleep_for (std::chrono::milliseconds (100));
 
     tap.expect_eq (val, 0, "waiting actually blocks");
 
diff --git a/test/thread/flag.cpp b/test/thread/flag.cpp
index c998f374..47c87e97 100644
--- a/test/thread/flag.cpp
+++ b/test/thread/flag.cpp
@@ -1,8 +1,9 @@
 #include "thread/flag.hpp"
-#include "thread/thread.hpp"
 
 #include "tap.hpp"
 
+#include <thread>
+
 
 int
 main ()
@@ -12,12 +13,12 @@ main ()
     cruft::thread::flag f;
     std::atomic<int> value = 0;
 
-    cruft::thread::thread t1 ([&] () {
+    std::thread t1 ([&] () {
         f.wait ();
         value = 1;
     });
 
-    cruft::thread::this_thread::sleep_for (std::chrono::milliseconds (100));
+    std::this_thread::sleep_for (std::chrono::milliseconds (100));
 
     tap.expect_eq (value, 0, "value hasn't been set during wait");
     f.notify_all ();
@@ -25,12 +26,12 @@ main ()
     t1.join ();
     tap.expect_eq (value, 1, "value has been changed after wait");
 
-    cruft::thread::thread t2 ([&] () {
+    std::thread t2 ([&] () {
         f.wait ();
         value = 2;
     });
 
-    cruft::thread::this_thread::sleep_for (std::chrono::milliseconds (100));
+    std::this_thread::sleep_for (std::chrono::milliseconds (100));
     tap.expect_eq (value, 2, "second wait didn't appear to block");
     t2.join ();
 
@@ -59,13 +60,13 @@ main ()
             }
         };
 
-        std::vector<cruft::thread::thread> workers;
+        std::vector<std::thread> workers;
         std::generate_n (
             std::back_inserter (workers),
             parallelism,
             [&, i = 0] () mutable
         {
-               return cruft::thread::thread { func, i++ };
+               return std::thread { func, i++ };
         });
 
         for (auto &t: workers)
diff --git a/test/thread/monitor.cpp b/test/thread/monitor.cpp
index 0e9e5543..9408a954 100644
--- a/test/thread/monitor.cpp
+++ b/test/thread/monitor.cpp
@@ -9,11 +9,11 @@
 #include "thread/event.hpp"
 #include "thread/monitor.hpp"
 #include "thread/semaphore.hpp"
-#include "thread/thread.hpp"
 
 #include "tap.hpp"
 
 #include <atomic>
+#include <thread>
 
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -49,8 +49,8 @@ main ()
     auto &enter = obj->enter;
     auto &leave = obj->leave;
 
-    cruft::thread::thread t1 ([&] () { obj->inc (); });
-    cruft::thread::thread t2 ([&] () { obj->inc (); });
+    std::thread t1 ([&] () { obj->inc (); });
+    std::thread t2 ([&] () { obj->inc (); });
 
     tap.expect_eq (value, 0, "wrapped class was left initialised");
 
diff --git a/test/thread/mutex.cpp b/test/thread/mutex.cpp
deleted file mode 100644
index cace788f..00000000
--- a/test/thread/mutex.cpp
+++ /dev/null
@@ -1,14 +0,0 @@
-#include "tap.hpp"
-#include "thread/mutex.hpp"
-
-int main ()
-{
-    cruft::TAP::logger tap;
-
-    cruft::thread::mutex a;
-    cruft::thread::mutex b;
-    (void)a;
-    (void)b;
-
-    return tap.status ();
-}
\ No newline at end of file
diff --git a/test/thread/semaphore.cpp b/test/thread/semaphore.cpp
index d8194c99..24fee205 100644
--- a/test/thread/semaphore.cpp
+++ b/test/thread/semaphore.cpp
@@ -1,10 +1,11 @@
 #include "thread/semaphore.hpp"
 #include "thread/flag.hpp"
-#include "thread/thread.hpp"
-#include "thread/mutex.hpp"
 
 #include "tap.hpp"
 
+#include <mutex>
+#include <thread>
+
 
 ///////////////////////////////////////////////////////////////////////////////
 void
@@ -35,7 +36,7 @@ main ()
         // the spawned thread attempts to double acquire a semaphore with
         // only one available and so should get blocked immediately.
         std::atomic<int> test = 0;
-        cruft::thread::thread t ([&] () {
+        std::thread t ([&] () {
             sem.lock ();
             sem.lock ();
             test = 1;
@@ -44,7 +45,7 @@ main ()
         // wait until we know the thread should have been blocked. it should
         // not have touched the 'test' variable at this point.
         while (sem.value () > 0)
-            cruft::thread::this_thread::yield ();
+            std::this_thread::yield ();
 
         tap.expect_eq (test, 0, "locking blocks in foreign thread");
 
@@ -56,9 +57,9 @@ main ()
     }
 
     {
-        const auto parallelism = cruft::thread::thread::hardware_concurrency ();
+        const auto parallelism = std::thread::hardware_concurrency ();
         constexpr int iterations = 1 << 16;
-        std::vector<cruft::thread::thread> threads;
+        std::vector<std::thread> threads;
 
         cruft::thread::semaphore sem (0);
 
diff --git a/test/thread/spinlock.cpp b/test/thread/spinlock.cpp
index 49b915ca..354812fd 100644
--- a/test/thread/spinlock.cpp
+++ b/test/thread/spinlock.cpp
@@ -8,11 +8,11 @@
 
 #include "thread/flag.hpp"
 #include "thread/spinlock.hpp"
-#include "thread/thread.hpp"
 
 #include "tap.hpp"
 
 #include <mutex>
+#include <thread>
 
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -38,14 +38,14 @@ main ()
     l.unlock ();
     tap.expect (true, "unlocked without contention");
 
-    if (cruft::thread::thread::hardware_concurrency () < 2) {
+    if (std::thread::hardware_concurrency () < 2) {
         tap.skip ("n-way fight");
     } else {
         constexpr int iterations = 1 << 12;
         cruft::thread::flag start_flag;
 
-        std::vector<cruft::thread::thread> contestants;
-        for (unsigned i = 0; i < cruft::thread::thread::hardware_concurrency (); ++i)
+        std::vector<std::thread> contestants;
+        for (unsigned i = 0; i < std::thread::hardware_concurrency (); ++i)
             contestants.emplace_back (fight, std::ref (start_flag), std::ref (l), iterations);
 
         start_flag.notify_all ();
@@ -53,7 +53,7 @@ main ()
         for (auto &t: contestants)
             t.join ();
 
-        tap.expect (true, "n-way fight, %! contestants", cruft::thread::thread::hardware_concurrency ());
+        tap.expect (true, "n-way fight, %! contestants", std::thread::hardware_concurrency ());
     }
 
     return tap.status ();
diff --git a/test/thread/thread.cpp b/test/thread/thread.cpp
deleted file mode 100644
index c0215fc8..00000000
--- a/test/thread/thread.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright 2019 Danny Robson <danny@nerdcruft.net>
- */
-
-#include "thread/thread.hpp"
-#include "tap.hpp"
-
-#include <atomic>
-
-static void run (std::atomic<int> &val) { ++val; }
-
-
-int main ()
-{
-    cruft::TAP::logger tap;
-
-    // Get the thread to increment an int. If it's been incremented once after
-    // joining then we assume the thread ran successfully.
-    std::atomic<int> val = 0;
-    cruft::thread::thread dude (run, std::ref (val));
-    dude.join ();
-    tap.expect_eq (val.load (), 1, "thread appears to have run");
-
-    return tap.status ();
-}
\ No newline at end of file
diff --git a/test/thread/ticketlock.cpp b/test/thread/ticketlock.cpp
index f9d7abb0..2c1d6ac9 100644
--- a/test/thread/ticketlock.cpp
+++ b/test/thread/ticketlock.cpp
@@ -8,11 +8,12 @@
 
 #include "thread/flag.hpp"
 #include "thread/ticketlock.hpp"
-#include "thread/thread.hpp"
-#include "thread/mutex.hpp"
 
 #include "tap.hpp"
 
+#include <mutex>
+#include <thread>
+
 
 ///////////////////////////////////////////////////////////////////////////////
 using ffs_t = std::chrono::high_resolution_clock;
@@ -44,7 +45,7 @@ main ()
     l.unlock ();
     tap.expect (true, "unlocked without contention");
 
-    if (true || cruft::thread::thread::hardware_concurrency () < 2) {
+    if (true || std::thread::hardware_concurrency () < 2) {
         tap.skip ("reasonably fair under contention");
     } else {
         // measure fairness under contention is below some threshold
@@ -63,7 +64,7 @@ main ()
 
         ffs_t::time_point a_finish, b_finish;
 
-        cruft::thread::thread a (
+        std::thread a (
             fight,
             std::ref (start_flag),
             std::ref (l),
@@ -71,7 +72,7 @@ main ()
             std::ref (a_finish)
         );
 
-        cruft::thread::thread b (
+        std::thread b (
             fight,
             std::ref (start_flag),
             std::ref (l),
diff --git a/thread/condition_variable.hpp b/thread/condition_variable.hpp
deleted file mode 100644
index c4c63179..00000000
--- a/thread/condition_variable.hpp
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright 2019 Danny Robson <danny@nerdcruft.net>
- */
-
-#pragma once
-
-#include "../platform.hpp"
-
-#if defined(PLATFORM_LINUX)
-#include "condition_variable_std.hpp"
-#elif defined(PLATFORM_WIN32)
-#include "condition_variable_win32.hpp"
-#else
-#error "Unsupported platform for condition_variable"
-#endif
\ No newline at end of file
diff --git a/thread/condition_variable_std.hpp b/thread/condition_variable_std.hpp
deleted file mode 100644
index 2388b9ea..00000000
--- a/thread/condition_variable_std.hpp
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright 2019 Danny Robson <danny@nerdcruft.net>
- */
-
-#pragma once
-
-#include <condition_variable>
-
-namespace cruft::thread {
-    inline namespace std {
-        using condition_variable = ::std::condition_variable;
-    }
-}
\ No newline at end of file
diff --git a/thread/condition_variable_win32.cpp b/thread/condition_variable_win32.cpp
deleted file mode 100644
index 24db38bc..00000000
--- a/thread/condition_variable_win32.cpp
+++ /dev/null
@@ -1,42 +0,0 @@
-#include "condition_variable_win32.hpp"
-
-#include <synchapi.h>
-
-using cruft::thread::win32::condition_variable;
-
-
-///////////////////////////////////////////////////////////////////////////////
-condition_variable::condition_variable ()
-    : m_native (CONDITION_VARIABLE_INIT)
-{
-    InitializeConditionVariable (&m_native);
-}
-
-
-//-----------------------------------------------------------------------------
-condition_variable::~condition_variable ()
-{ ; }
-
-
-///////////////////////////////////////////////////////////////////////////////
-void
-condition_variable::wait (std::unique_lock<cruft::thread::mutex> &lock)
-{
-    SleepConditionVariableCS (
-        &m_native, &lock.mutex ()->native_handle (), INFINITE
-    );
-}
-
-
-///////////////////////////////////////////////////////////////////////////////
-void condition_variable::notify_one (void) noexcept
-{
-    WakeConditionVariable (&m_native);
-}
-
-
-//-----------------------------------------------------------------------------
-void condition_variable::notify_all () noexcept
-{
-    WakeAllConditionVariable (&m_native);
-}
diff --git a/thread/condition_variable_win32.hpp b/thread/condition_variable_win32.hpp
deleted file mode 100644
index f9446468..00000000
--- a/thread/condition_variable_win32.hpp
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright 2019 Danny Robson <danny@nerdcruft.net>
- */
-
-#pragma once
-
-#include "mutex.hpp"
-
-#include <mutex>
-
-namespace cruft::thread {
-    inline namespace win32 {
-        enum class cv_status {
-            no_timeout,
-            timeout
-        };
-
-        class condition_variable {
-        public:
-            condition_variable ();
-            condition_variable (condition_variable const&) noexcept = delete;
-            condition_variable& operator= (condition_variable const&) = delete;
-            ~condition_variable ();
-
-            void notify_one (void) noexcept;
-            void notify_all (void) noexcept;
-
-            void wait (std::unique_lock<mutex>&);
-
-            template <typename PredicateT>
-            void wait (
-                std::unique_lock<mutex> &lock,
-                PredicateT pred
-            ) {
-                while (!pred ())
-                    wait (lock);
-            }
-
-            template <class RepT, class PeriodT>
-            cv_status
-            wait_for (
-                std::unique_lock<mutex>& lock,
-                std::chrono::duration<RepT, PeriodT> const &rel_time
-            );
-
-            template <class RepT, class PeriodT, class PredicateT>
-            bool wait_for (
-                std::unique_lock<mutex>& lock,
-                std::chrono::duration<RepT, PeriodT> const &rel_time,
-                PredicateT pred
-            );
-
-        private:
-            CONDITION_VARIABLE m_native;
-        };
-    };
-}
diff --git a/thread/event_std.hpp b/thread/event_std.hpp
index e1be333c..d114fc2e 100644
--- a/thread/event_std.hpp
+++ b/thread/event_std.hpp
@@ -8,10 +8,9 @@
 
 #pragma once
 
-#include "condition_variable.hpp"
-#include "mutex.hpp"
-
 #include <atomic>
+#include <mutex>
+#include <condition_variable>
 
 
 namespace cruft::thread {
@@ -49,8 +48,8 @@ namespace cruft::thread {
 
     private:
         std::atomic<int> m_value;
-        mutex m_mutex;
-        condition_variable m_cv;
+        std::mutex m_mutex;
+        std::condition_variable m_cv;
     };
 }
 
diff --git a/thread/flag_std.hpp b/thread/flag_std.hpp
index 50199526..2275c092 100644
--- a/thread/flag_std.hpp
+++ b/thread/flag_std.hpp
@@ -1,40 +1,40 @@
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright 2018 Danny Robson <danny@nerdcruft.net>
- */
-
-#pragma once
-
-#include "mutex.hpp"
-#include "condition_variable.hpp"
-
-#include <atomic>
-
-namespace cruft::thread {
-    /// a fire-once event that users can wait upon. if already fired then
-    /// waiting will be a noop.
-    class flag {
-    public:
-        flag ();
-
-        /// blocks indefinitely until the flag has been set.
-        void wait (void);
-
-        /// wake one thread waiting on the flag.
-        ///
-        /// it may be possible, through spurious wakeups, that more threads
-        /// are release than requested. though this should not be typical.
-        void notify_one (void);
-
-        /// wake all threads waiting on the flag
-        void notify_all (void);
-
-    private:
-        std::atomic<bool> fired;
-        ::cruft::thread::mutex m_mutex;
-        ::cruft::thread::condition_variable m_condition;
-    };
-}
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright 2018 Danny Robson <danny@nerdcruft.net>
+ */
+
+#pragma once
+
+#include <atomic>
+#include <mutex>
+#include <condition_variable>
+
+
+namespace cruft::thread {
+    /// a fire-once event that users can wait upon. if already fired then
+    /// waiting will be a noop.
+    class flag {
+    public:
+        flag ();
+
+        /// blocks indefinitely until the flag has been set.
+        void wait (void);
+
+        /// wake one thread waiting on the flag.
+        ///
+        /// it may be possible, through spurious wakeups, that more threads
+        /// are release than requested. though this should not be typical.
+        void notify_one (void);
+
+        /// wake all threads waiting on the flag
+        void notify_all (void);
+
+    private:
+        std::atomic<bool> fired;
+        std::mutex m_mutex;
+        std::condition_variable m_condition;
+    };
+}
diff --git a/thread/fwd.hpp b/thread/fwd.hpp
deleted file mode 100644
index 920888dc..00000000
--- a/thread/fwd.hpp
+++ /dev/null
@@ -1,4 +0,0 @@
-#pragma once
-
-namespace cruft::thread {
-}
\ No newline at end of file
diff --git a/thread/monitor.hpp b/thread/monitor.hpp
index 76a939a4..ce72fb59 100644
--- a/thread/monitor.hpp
+++ b/thread/monitor.hpp
@@ -6,16 +6,15 @@
  * Copyright 2018 Danny Robson <danny@nerdcruft.net>
  */
 
-#ifndef CRUFT_UTIL_THREAD_MONITOR_HPP
-#define CRUFT_UTIL_THREAD_MONITOR_HPP
+#pragma once
 
-#include "mutex.hpp"
-
-#include <utility>
 #include <functional>
+#include <mutex>
+#include <utility>
+
 
 namespace cruft::thread {
-    template <typename ValueT, typename MutexT = cruft::thread::mutex>
+    template <typename ValueT, typename MutexT = std::mutex>
     class monitor {
     public:
         template <typename ...Args>
@@ -48,5 +47,3 @@ namespace cruft::thread {
         ValueT m_value;
     };
 };
-
-#endif
diff --git a/thread/mutex.hpp b/thread/mutex.hpp
deleted file mode 100644
index d2a66f5d..00000000
--- a/thread/mutex.hpp
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright 2019 Danny Robson <danny@nerdcruft.net>
- */
-
-#pragma once
-
-#include "../platform.hpp"
-
-#if defined(PLATFORM_LINUX)
-#include "mutex_std.hpp"
-#elif defined(PLATFORM_WIN32)
-#include "mutex_win32.hpp"
-#else
-#error "Unsupported mutex platform"
-#endif
diff --git a/thread/mutex_std.hpp b/thread/mutex_std.hpp
deleted file mode 100644
index f5b7e7b7..00000000
--- a/thread/mutex_std.hpp
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright 2019 Danny Robson <danny@nerdcruft.net>
- */
-
-#pragma once
-
-#include <mutex>
-
-namespace cruft::thread {
-    inline namespace std {
-        using mutex = ::std::mutex;
-    }
-}
diff --git a/thread/mutex_win32.cpp b/thread/mutex_win32.cpp
deleted file mode 100644
index 3c4c69ff..00000000
--- a/thread/mutex_win32.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-#include "mutex.hpp"
-
-using cruft::thread::win32::mutex;
-
-
-///////////////////////////////////////////////////////////////////////////////
-mutex::~mutex ()
-{
-   DeleteCriticalSection (&m_section);
-}
-
-
-///////////////////////////////////////////////////////////////////////////////
-void mutex::lock (void)
-{
-    EnterCriticalSection (&m_section);
-}
-
-
-//-----------------------------------------------------------------------------
-void mutex::unlock (void)
-{
-    LeaveCriticalSection (&m_section);
-}
-
-
-//-----------------------------------------------------------------------------
-bool mutex::try_lock (void)
-{
-    return TryEnterCriticalSection (&m_section);
-}
-
-
-///////////////////////////////////////////////////////////////////////////////
-CRITICAL_SECTION&
-mutex::native_handle (void)
-{
-    return m_section;
-}
diff --git a/thread/mutex_win32.hpp b/thread/mutex_win32.hpp
deleted file mode 100644
index b161e058..00000000
--- a/thread/mutex_win32.hpp
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright 2019 Danny Robson <danny@nerdcruft.net>
- */
-
-#pragma once
-
-#include "../win32/handle.hpp"
-#include "../win32/windows.hpp"
-
-// Include the std mutex header so we can get access to expected
-// functionality like std::lock_guard.
-#include <mutex>
-
-namespace cruft::thread {
-    inline namespace win32 {
-        class mutex {
-        public:
-            constexpr mutex () noexcept
-                : m_section {}
-            {
-                InitializeCriticalSection (&m_section);
-            }
-
-            mutex (mutex const&) = delete;
-            ~mutex ();
-
-            void lock (void);
-            void unlock (void);
-            bool try_lock (void);
-
-            CRITICAL_SECTION& native_handle (void);
-
-        private:
-            CRITICAL_SECTION m_section;
-        };
-    };
-}
diff --git a/thread/thread.hpp b/thread/thread.hpp
deleted file mode 100644
index 2c51994d..00000000
--- a/thread/thread.hpp
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright 2019 Danny Robson <danny@nerdcruft.net>
- */
-
-#pragma once
-
-#include "../platform.hpp"
-
-#if defined(PLATFORM_LINUX)
-#include "thread_std.hpp"
-#elif defined(PLATFORM_WIN32)
-#include "thread_win32.hpp"
-#else
-#error "Unsupported threading system"
-#endif
\ No newline at end of file
diff --git a/thread/thread_std.hpp b/thread/thread_std.hpp
deleted file mode 100644
index dedebc23..00000000
--- a/thread/thread_std.hpp
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright 2019 Danny Robson <danny@nerdcruft.net>
- */
-
-#pragma once
-
-#include <thread>
-
-namespace cruft::thread {
-    inline namespace std {
-        using thread = ::std::thread;
-        namespace this_thread = ::std::this_thread;
-    }
-}
\ No newline at end of file
diff --git a/thread/thread_win32.cpp b/thread/thread_win32.cpp
deleted file mode 100644
index 118c062f..00000000
--- a/thread/thread_win32.cpp
+++ /dev/null
@@ -1,47 +0,0 @@
-#include "thread_win32.hpp"
-
-using cruft::thread::win32::thread;
-
-
-///////////////////////////////////////////////////////////////////////////////
-thread::thread () noexcept
-{ ; }
-
-
-//-----------------------------------------------------------------------------
-thread::thread (thread &&rhs) noexcept
-{
-    std::swap (m_handle, rhs.m_handle);
-}
-
-
-//-----------------------------------------------------------------------------
-thread&
-thread::operator= (thread &&rhs) noexcept
-{
-    std::swap (m_handle, rhs.m_handle);
-    return *this;
-}
-
-
-///////////////////////////////////////////////////////////////////////////////
-void thread::join ()
-{
-    WaitForSingleObject (m_handle, INFINITE);
-}
-
-
-///////////////////////////////////////////////////////////////////////////////
-unsigned int thread::hardware_concurrency (void) noexcept
-{
-    SYSTEM_INFO res;
-    GetNativeSystemInfo (&res);
-    return res.dwNumberOfProcessors;
-}
-
-
-///////////////////////////////////////////////////////////////////////////////
-void cruft::thread::win32::this_thread::yield (void) noexcept
-{
-    Sleep (0);
-}
diff --git a/thread/thread_win32.hpp b/thread/thread_win32.hpp
deleted file mode 100644
index a0351277..00000000
--- a/thread/thread_win32.hpp
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright 2019 Danny Robson <danny@nerdcruft.net>
- */
-
-#pragma once
-
-#include "../win32/handle.hpp"
-#include "../win32/windows.hpp"
-#include "../win32/except.hpp"
-
-#include <chrono>
-
-namespace cruft::thread {
-    inline namespace win32 {
-        namespace detail {
-            template <class T>
-            std::decay_t<T>
-            decay_copy (T&& v)
-            {
-                return std::forward<T>(v);
-            }
-
-
-            template <typename FunctionT, typename ...ArgsT>
-            class dispatcher {
-            public:
-                dispatcher (FunctionT &&func, ArgsT &&...args)
-                    : m_func (std::forward<FunctionT> (func))
-                    , m_args (std::forward<ArgsT> (args)...)
-                { ; }
-
-                void run (void)
-                {
-                    return _run (
-                        std::make_index_sequence<sizeof...(ArgsT)> {}
-                    );
-                }
-
-            private:
-                template <std::size_t... S>
-                void _run (std::index_sequence <S...>)
-                {
-                    std::invoke (
-                        decay_copy (std::forward<FunctionT> (m_func)),
-                        decay_copy (std::forward<ArgsT> (std::get<S> (m_args)))...
-                    );
-                }
-
-                FunctionT m_func;
-                std::tuple<ArgsT...> m_args;
-            };
-
-            template <typename DispatcherT>
-            DWORD WINAPI run (LPVOID arg)
-            {
-                auto *obj = reinterpret_cast<DispatcherT*> (arg);
-
-                try {
-                    obj->run ();
-                    return 0;
-                } catch (...) {
-                    delete obj;
-                    throw;
-                }
-            }
-        };
-
-        struct thread {
-            using id = ::cruft::win32::handle::native_type;
-
-            thread () noexcept;
-            thread (thread &&) noexcept;
-
-            template <typename FunctionT, typename... ArgsT>
-            thread (FunctionT &&func, ArgsT&&...args)
-            {
-                using dispatch_t = detail::dispatcher<FunctionT,ArgsT...>;
-
-                auto data = std::make_unique<dispatch_t> (
-                    std::forward<FunctionT> (func),
-                    std::forward<ArgsT> (args)...
-                );
-
-                m_handle.reset (
-                    CreateThread (
-                        nullptr, 0,
-                        detail::run<dispatch_t>,
-                        static_cast<void*> (data.get ()),
-                        0,
-                        nullptr
-                    )
-                );
-
-                if (!m_handle)
-                    throw std::system_error (
-                        cruft::win32::error::last_code (),
-                        std::generic_category ()
-                    );
-
-                data.release ();
-            }
-
-
-            thread (thread const&) = delete;
-
-            thread& operator= (thread&&) noexcept;
-
-            void join (void);
-
-            static unsigned int hardware_concurrency () noexcept;
-
-        private:
-            ::cruft::win32::handle m_handle;
-        };
-
-        namespace this_thread {
-            void yield (void) noexcept;
-
-            thread::id get_id (void) noexcept;
-
-            template <class Rep, class Period>
-            void sleep_for (
-                std::chrono::duration<Rep, Period> const& sleep_duration
-            ) {
-                auto remain = std::chrono::duration_cast<std::chrono::milliseconds> (
-                    sleep_duration
-                ).count ();
-
-                while (remain > 0) {
-                    auto const step = cruft::min (remain, INFINITE - 1);
-                    Sleep (remain);
-                    remain -= step;
-                }
-            }
-
-
-            template <class ClockT, class DurationT>
-            void
-            sleep_until (std::chrono::time_point<ClockT, DurationT> const& sleep_time)
-            {
-                if (ClockT::is_steady)
-                    return sleep_for (sleep_time - ClockT::now ());
-
-                for (auto now = ClockT::now (); now < sleep_time; now = ClockT::now ())
-                    sleep_for (sleep_time - now);
-            }
-
-
-            template <class Clock, class Duration>
-            void sleep_until (std::chrono::time_point<Clock,Duration> const& sleep_time);
-        }
-    };
-}
diff --git a/time_win32.cpp b/time_win32.cpp
index 06db7b0b..b31253a6 100644
--- a/time_win32.cpp
+++ b/time_win32.cpp
@@ -8,13 +8,13 @@
 
 #include "time.hpp"
 
-#include "thread/thread.hpp"
-
 #include <chrono>
+#include <thread>
+
 
 ///////////////////////////////////////////////////////////////////////////////
 void
 cruft::sleep (uint64_t ns)
 {
-    cruft::thread::this_thread::sleep_for (std::chrono::nanoseconds (ns));
+    std::this_thread::sleep_for (std::chrono::nanoseconds (ns));
 }