<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Jul 11, 2011, at 8:54 , Quanming Shi wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "> " size_t " is defined in newlib library, included from <inttypes.h><br></span></blockquote></div>It's in <stddef.h>. In general you want to use size_t when you are referring to the size of an object, that is, anything that would be returned by the sizeof operator.<div><br></div><div>I personally avoid using plain old "int" or "unsigned" in interfaces. I prefer to:</div><div><br></div><div>- Use size_t if something refers to a size;</div><div>- Use uint32_t, int32_t and friends from <inttypes.h> when I know the size of a data type (I know they're defined to be in stdint.h but I use inttypes.h);</div><div>- Make up a typedef for something that has no natural data size.</div><div><br></div><div>I'd also use "void *" instead of "char *" for your addresses, for example:</div><div><br></div><div><div>rtems_status_code rtems_mprot_alut_search(void *addr, rtems_mprot_alut **p_ret);<br></div></div><div><br></div><div>It also makes sense to change the "void *" to "const void *" if your library never needs to write to those addresses. </div><div> </div><div><div><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px; ">Peter<br>-----------------<br>Peter Dufault<br>HD Associates, Inc. Software and System Engineering</span></font></div></span></span>
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