<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I think you might need to do two passes if that’s straight-forward. Then you can count, lock, allocate, unlock, read.<div class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Apr 27, 2019, at 22:09 , Chris Johns <<a href="mailto:chrisj@rtems.org" class="">chrisj@rtems.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">On 27/4/19 10:23 pm, <a href="mailto:dufault@hda.com" class="">dufault@hda.com</a> wrote:<br class=""><blockquote type="cite" class="">This is because RTL locks out heap operations. For ELF<br class="">files /rtems_rtl_alloc_lock() /calls /rtem_rtl_alloc_heap() /and that<br class="">calls /_RTEMS_Lock_allocator()/ which locks the heap. Then RTL calls /read()<br class="">/and the NFS threads try to use the heap. <br class=""><br class="">(gdb) up<br class="">#1 0x00135394 in rtems_rtl_alloc_lock ()<br class=""> at<br class="">/home/dufault/development/rtems/kernel/rtems/c/src/../../cpukit/libdl/rtl-allocator.c:119<br class="">119 rtl->allocator.allocator (RTEMS_RTL_ALLOC_LOCK,<br class="">(gdb) print rtl->allocator.allocator<br class="">$469 = (rtems_rtl_allocator) 0x1357c5 <rtems_rtl_alloc_heap><br class="">(gdb) <br class=""></blockquote><br class="">Awesome investigation. I will take a look at the use of the allocator lock.<br class=""><br class="">The lock is being held in an attempt to make sure the allocation of the text<br class="">section and the veneers are as close as possible. The veneer needs to located in<br class="">a place where it can be reached.<br class=""><br class="">If the allocator lock is being held and NFS is using it while being used then we<br class="">will deadlock.<br class=""><br class="">Chris<br class=""></div></div></blockquote></div><br class=""><div class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant-ligatures: normal; font-variant-position: normal; font-variant-caps: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: 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; border-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-stroke-width: 0px;"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant-ligatures: normal; font-variant-position: normal; font-variant-caps: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: 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; border-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-stroke-width: 0px;"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px;">Peter<br class="">-----------------<br class="">Peter Dufault<br class="">HD Associates, Inc. Software and System Engineering</span></font></div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><font class="Apple-style-span" size="3"><span class="Apple-style-span" style="font-size: 12px;"><br class=""></span></font></div>This email is delivered through the public internet using protocols subject to interception and tampering.</span></div></span></div></div></div></div></div></div></div></div></div>
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