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Move the shared memory size calculation to its own function

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This change refactors the shared memory size calculation in
CreateSharedMemoryAndSemaphores() to its own function.  This is intended
for use in a future change related to the setup of huge pages and shared
memory with some GUCs, while useful on its own for extensions.

Author: Nathan Bossart
Discussion: https://postgr.es/m/F2772387-CE0F-46BF-B5F1-CC55516EB885@amazon.com
This commit is contained in:
Michael Paquier
2021-09-06 10:59:20 +09:00
parent 5fcb23c18f
commit 0bd305ee1d
2 changed files with 84 additions and 59 deletions
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src/include/storage/ipc.h
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@@ -77,6 +77,7 @@ extern void check_on_shmem_exit_lists_are_empty(void);
/* ipci.c */
extern PGDLLIMPORT shmem_startup_hook_type shmem_startup_hook;
extern Size CalculateShmemSize(int *num_semaphores);
extern void CreateSharedMemoryAndSemaphores(void);
#endif /* IPC_H */