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< p > Library Version 11.2.5.3< / p >
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< th colspan = "3" align = "center" > db_env_set_func_pwrite< / th >
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Berkeley DB Application Space Static Functions
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< h2 class = "title" style = "clear: both" > < a id = "db_env_set_func_pwrite" > < / a > db_env_set_func_pwrite< / h2 >
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< pre class = "programlisting" > #include < db.h>
int
db_env_set_func_pwrite(ssize_t (*func_pwrite)(int fd, const void *buf,
size_t nbytes, off_t offset)); < / pre >
< p >
Replace Berkeley DB calls to the IEEE/ANSI Std 1003.1 (POSIX)
< span class = "bold" > < strong > pwrite< / strong > < / span > function with < span class = "bold" > < strong > func_pwrite< / strong > < / span > , which must conform to the standard
interface specification.
< / p >
< p >
The < code class = "function" > db_env_set_func_pwrite()< / code > configures all operations performed
by a process and all of its threads of control, not operations
confined to a single database environment.
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< p >
Although the < code class = "function" > db_env_set_func_pwrite()< / code > may be called at any time
during the life of the application, it should normally be called
before making calls to the < a class = "xref" href = "envcreate.html" title = "db_env_create" > db_env_create< / a > or
< a class = "xref" href = "dbcreate.html" title = "db_create" > db_create< / a > methods.
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The < code class = "function" > db_env_set_func_pwrite()< / code > < span >
function returns a non-zero error value on failure and 0 on success.
< / span >
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< h4 class = "title" > < a id = "idp63631200" > < / a > func_pwrite< / h4 >
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The < span class = "bold" > < strong > func_pwrite< / strong > < / span > parameter is the
replacement function. It must conform to the standard interface
specification.
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< h3 class = "title" > < a id = "idp63629808" > < / a > See Also< / h3 >
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< a href = "../../programmer_reference/program_runtime.html" class = "olink" > Run-time configuration< / a >
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