From 7f77e72dcaa3bfe9c684f92bbd84f9ecf4348007 Mon Sep 17 00:00:00 2001
From: Cody Licorish <svgmovement@gmail.com>
Date: Mon, 18 May 2020 13:14:06 -0500
Subject: [PATCH] Change `acquire` and `release` to noexcept

This change allows developers to more easily use the default
implementations of the `mmapio_i` interface in noexcept contexts.
The default implementations report their errors through `errno`.
---
 mmapio.cpp | 16 ++++++++--------
 mmapio.hpp |  4 ++--
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/mmapio.cpp b/mmapio.cpp
index 7d24e18..c664465 100644
--- a/mmapio.cpp
+++ b/mmapio.cpp
@@ -100,13 +100,13 @@ namespace mmapio {
      * \brief Acquire a lock to the space.
      * \return pointer to locked space on success, NULL otherwise
      */
-    void* acquire(void) override;
+    void* acquire(void) noexcept override;
 
     /**
      * \brief Release a lock of the space.
      * \param p pointer of region to release
      */
-    void release(void* p) override;
+    void release(void* p) noexcept override;
 
     /**
      * \brief Check the length of the mapped area.
@@ -198,13 +198,13 @@ namespace mmapio {
      * \brief Acquire a lock to the space.
      * \return pointer to locked space on success, NULL otherwise
      */
-    void* acquire(void) override;
+    void* acquire(void) noexcept override;
 
     /**
      * \brief Release a lock of the space.
      * \param p pointer of region to release
      */
-    void release(void* p) override;
+    void release(void* p) noexcept override;
 
     /**
      * \brief Check the length of the mapped area.
@@ -601,11 +601,11 @@ namespace mmapio {
     return;
   }
 
-  void* mmapio_unix::acquire(void) {
+  void* mmapio_unix::acquire(void) noexcept {
     return static_cast<unsigned char*>(this->ptr)+this->shift;
   }
 
-  void mmapio_unix::release(void* p) {
+  void mmapio_unix::release(void* p) noexcept {
     return;
   }
 
@@ -747,11 +747,11 @@ namespace mmapio {
     return;
   }
 
-  void* mmapio_win32::acquire(void) {
+  void* mmapio_win32::acquire(void) noexcept {
     return static_cast<unsigned char*>(this->ptr)+this->shift;
   }
 
-  void mmapio_win32::release(void* p) {
+  void mmapio_win32::release(void* p) noexcept {
     return;
   }
 
diff --git a/mmapio.hpp b/mmapio.hpp
index 141fab6..e50e5b9 100644
--- a/mmapio.hpp
+++ b/mmapio.hpp
@@ -83,13 +83,13 @@ namespace mmapio {
      * \brief Acquire a lock to the space.
      * \return pointer to locked space on success, NULL otherwise
      */
-    virtual void* acquire(void) = 0;
+    virtual void* acquire(void) noexcept = 0;
 
     /**
      * \brief Release a lock of the space.
      * \param p pointer of region to release
      */
-    virtual void release(void* p) = 0;
+    virtual void release(void* p) noexcept = 0;
 
     /**
      * \brief Check the length of the mapped area.