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| author | Michael Paquier <michael@paquier.xyz> | 2022-09-21 10:11:23 +0900 |
|---|---|---|
| committer | Michael Paquier <michael@paquier.xyz> | 2022-09-21 10:11:23 +0900 |
| commit | ec3c9cc202fb2749fce82483e6dc247cfe286cab (patch) | |
| tree | 3de8933a2bdeb4af9950c26844efde71b0588949 /src/include/c.h | |
| parent | 1c27d16e6e5c1f463bbe1e9ece88dda811235165 (diff) | |
| download | postgresql-ec3c9cc202fb2749fce82483e6dc247cfe286cab.tar.gz | |
Add definition pg_attribute_aligned() for MSVC
Visual Studio 2015+ has support for a macro to control the alignement of
structures as of __declspec(align(#)), and this commit adds a definition
of pg_attribute_aligned() based on that. It happens that this was
already used in the implementation of atomics for MSVC. Note that there
is still no definition fo pg_attribute_packed(), so this does not impact
itemptr.h.
Author: James Coleman
Discussion: https://postgr.es/m/CAAaqYe-HbtZvR3msoMtk+hYW2S0e0OapzMW8icSMYTMA+mN8Aw@mail.gmail.com
Diffstat (limited to 'src/include/c.h')
| -rw-r--r-- | src/include/c.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/include/c.h b/src/include/c.h index 101ba41331..c8f72e44d8 100644 --- a/src/include/c.h +++ b/src/include/c.h @@ -181,6 +181,17 @@ #define pg_attribute_noreturn() __attribute__((noreturn)) #define pg_attribute_packed() __attribute__((packed)) #define HAVE_PG_ATTRIBUTE_NORETURN 1 +#elif defined(_MSC_VER) +/* + * MSVC supports aligned. noreturn is also possible but in MSVC it is + * declared before the definition while pg_attribute_noreturn() macro + * is currently used after the definition. + * + * Packing is also possible but only by wrapping the entire struct definition + * which doesn't fit into our current macro declarations. + */ +#define pg_attribute_aligned(a) __declspec(align(a)) +#define pg_attribute_noreturn() #else /* * NB: aligned and packed are not given default definitions because they |