Mercurial > cpython-lru_cache-weakref

annotate Mac/Python/macshlglue.c @ 4566:6403c94de50d legacy-trunk

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Added safeguard against failure in __del__.
author Guido van Rossum <guido@python.org>
date Wed, 27 Nov 1996 19:39:58 +0000
parents 650031e1e419
children d6b292a33cfe
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ed821a99ba39 Glue for the python shared library: an init routine that remembers
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1 /*
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2 ** Shared library initialization code.
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3 **
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4 ** This code calls the MetroWerks shared-library initialization code
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5 ** and performs one extra step: it remembers the FSSpec of the file
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6 ** we are loaded from, so we can later call PyMac_AddLibResources to
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7 ** add the file to our resource file chain.
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8 **
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9 ** This file is needed for PythonCore and for any dynamically loaded
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10 ** module that has interesting resources in its .slb file.
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11 ** Use by replacing __initialize in the "CFM preferences" init field
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12 ** by __initialize_with_resources.
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13 */
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15 #include <Quickdraw.h>
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16 #include <SegLoad.h>
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17 #include <FragLoad.h>
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18 #include <Files.h>
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19 #include <Resources.h>
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21
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22 /*
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23 ** Variables passed from shared lib initialization to PyMac_AddLibResources.
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24 */
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25 static int library_fss_valid;
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26 static FSSpec library_fss;
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27
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28 /*
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29 ** Routine called upon fragment load. We attempt to save the FSSpec from which we're
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30 ** loaded. We always return noErr (we just continue without the resources).
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31 */
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32 OSErr pascal
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33 __initialize_with_resources(InitBlockPtr data)
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34 {
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35 /* Call the MW runtime's initialization routine */
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36 /* #ifdef __CFM68K__ */
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37 #if 1
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38 __initialize();
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39 #else
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40 __sinit();
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41 #endif
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42
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43 if ( data == nil ) return noErr;
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44 if ( data->fragLocator.where == kOnDiskFlat ) {
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45 library_fss = *data->fragLocator.u.onDisk.fileSpec;
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46 library_fss_valid = 1;
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47 } else if ( data->fragLocator.where == kOnDiskSegmented ) {
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48 library_fss = *data->fragLocator.u.inSegs.fileSpec;
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49 library_fss_valid = 1;
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50 }
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51 return noErr;
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52 }
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53
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54 /*
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55 ** Insert the library resources into the search path. Put them after
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56 ** the resources from the application (which we assume is the current
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57 ** resource file). Again, we ignore errors.
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58 */
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59 void
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60 PyMac_AddLibResources()
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61 {
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62 if ( !library_fss_valid )
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63 return;
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64 (void)FSpOpenResFile(&library_fss, fsRdPerm);
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65 }
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66