41 lines
783 B
Markdown
41 lines
783 B
Markdown
# PR_AttachSharedMemory
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Attaches a memory segment previously opened with {ref}`PR_OpenSharedMemory`
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and maps it into the process memory space.
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## Syntax
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```{code}
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#include <prshm.h>
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```
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```{code}
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NSPR_API( void * )
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PR_AttachSharedMemory(
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PRSharedMemory *shm,
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PRIntn flags
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);
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/* Define values for PR_AttachSharedMemory(...,flags) */
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#define PR_SHM_READONLY 0x01
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```
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### Parameters
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The function has these parameters:
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shm
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: The handle returned from {ref}`PR_OpenSharedMemory`.
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flags
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: Options for mapping the shared memory. `PR_SHM_READONLY` causes the
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memory to be attached read-only.
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### Returns
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Address where shared memory is mapped, or `NULL` if an error occurs.
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Retrieve the reason for the failure by calling {ref}`PR_GetError` and
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{ref}`PR_GetOSError`.
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