Spin lock replaced/affinity support added. Also size_t replaced to std::size_t. :)

Replaced post-increment in affinity code to pre-increment.

Make affinity controllable by boolean flag. On supported platforms affinity will always build, to turn it on in application just enough to set tp::v_affinity = true; in application.

Polishing affinity code (one condition less)

FreeBSD affinity support added.

Code formatting.

Unnesessary include removed.

We're should bind only online cores.

Fix job stealing. It also should send notification, otherwise steal() can't wake up worker.

Better fix for job stealing.

Changes from inkooboo#24 are incorporated. Conditional variables instead spin-lock are kept as well.

Fix overnotification when tryPost.

….com/yvoinov/thread-pool-cpp into thread-pool-cpp-round-robin-stealing

AlexanderSuprunenko@644c9d3

AlexanderSuprunenko@644c9d3

This reverts commit e9d8206.

AlexanderSuprunenko@d85ed67

This reverts commit 75eeabf.

AlexanderSuprunenko@d85ed67

Refactoring. Partial rollback  2e5151b.

After profiling and testing, rollback FixedFunction() instead std::function.

A new post() often occurs in imputation of the sleep sequence. Interrupting the sequence here and performing pop() allows to somewhat reduce pool latency.

This reverts commit 9187bdc.

A new post() often occurs during a sleep sequence. Interrupting the sequence and performing pop() allows you to somewhat reduce pool latency.

Oracle Developer Studio cannot compile fixed_function.hpp. So, to build pool with this compiler, we're just use std::function instead fixed function implementation.

Logical error in threadFunc() fixed; other minor fixes.

….com/yvoinov/thread-pool-cpp into thread-pool-cpp-round-robin-stealing

Some refactoring affinity code

Sleep counter implementation

….com/yvoinov/thread-pool-cpp into thread-pool-cpp-round-robin-stealing

Rework ThreadPoolImpl<Task, Queue>::post(Handler&& handler) to prevent accidentally exception when thread pool falsely full.

Note: std::exchange is C++14

Performance improvement. This micro optimization reduce latency with job stealing up to 1-2 ms.

SLEEP_CNT renamed to IDLE_CNT; made fully C++11 compatible

Less unnesessary code generation

- Using CV wait_for in post() instead sleep_for
- Fix post() description
- Requires more strict barriers in MPMC to prevent hangs
- Vector include moved to appropriate place

Queue-overflow proofed post() implemented for thread pool.

Removed unnesessary lambda.

Avoid warning 'Unused variable w'

It is non-requires to SunPRO conditional compilation for compatibility