projects / OpenSPARC-T2-DV / blame
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| 17 | <title>5.1 Operating System Utilities </title> | |
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| 54 | ||
| 55 | <H1><A NAME="SECTION007100000000000000000"></A><A NAME="os"></A> | |
| 56 | <BR> | |
| 57 | 5.1 Operating System Utilities | |
| 58 | </H1> | |
| 59 | ||
| 60 | <P> | |
| 61 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>int <b><tt id='l2h-156' xml:id='l2h-156' class="cfunction">Py_FdIsInteractive</tt></b>(</nobr></td><td>FILE *<var>fp</var>, char *<var>filename</var>)</td></tr></table></dt> | |
| 62 | <dd> | |
| 63 | Return true (nonzero) if the standard I/O file <var>fp</var> with name | |
| 64 | <var>filename</var> is deemed interactive. This is the case for files | |
| 65 | for which "<tt class="samp">isatty(fileno(<var>fp</var>))</tt>" is true. If the global | |
| 66 | flag <tt class="cdata">Py_InteractiveFlag</tt> is true, this function also returns | |
| 67 | true if the <var>filename</var> pointer is <tt class="constant">NULL</tt> or if the name is | |
| 68 | equal to one of the strings <code>'<stdin>'</code> or <code>'???'</code>. | |
| 69 | </dd></dl> | |
| 70 | ||
| 71 | <P> | |
| 72 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>long <b><tt id='l2h-157' xml:id='l2h-157' class="cfunction">PyOS_GetLastModificationTime</tt></b>(</nobr></td><td>char *<var>filename</var>)</td></tr></table></dt> | |
| 73 | <dd> | |
| 74 | Return the time of last modification of the file <var>filename</var>. | |
| 75 | The result is encoded in the same way as the timestamp returned by | |
| 76 | the standard C library function <tt class="cfunction">time()</tt>. | |
| 77 | </dd></dl> | |
| 78 | ||
| 79 | <P> | |
| 80 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>void <b><tt id='l2h-158' xml:id='l2h-158' class="cfunction">PyOS_AfterFork</tt></b>(</nobr></td><td>)</td></tr></table></dt> | |
| 81 | <dd> | |
| 82 | Function to update some internal state after a process fork; this | |
| 83 | should be called in the new process if the Python interpreter will | |
| 84 | continue to be used. If a new executable is loaded into the new | |
| 85 | process, this function does not need to be called. | |
| 86 | </dd></dl> | |
| 87 | ||
| 88 | <P> | |
| 89 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>int <b><tt id='l2h-159' xml:id='l2h-159' class="cfunction">PyOS_CheckStack</tt></b>(</nobr></td><td>)</td></tr></table></dt> | |
| 90 | <dd> | |
| 91 | Return true when the interpreter runs out of stack space. This is a | |
| 92 | reliable check, but is only available when <tt class="constant">USE_STACKCHECK</tt> | |
| 93 | is defined (currently on Windows using the Microsoft Visual C++ | |
| 94 | compiler). <tt class="constant">USE_STACKCHECK</tt> will be | |
| 95 | defined automatically; you should never change the definition in | |
| 96 | your own code. | |
| 97 | </dd></dl> | |
| 98 | ||
| 99 | <P> | |
| 100 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>PyOS_sighandler_t <b><tt id='l2h-160' xml:id='l2h-160' class="cfunction">PyOS_getsig</tt></b>(</nobr></td><td>int <var>i</var>)</td></tr></table></dt> | |
| 101 | <dd> | |
| 102 | Return the current signal handler for signal <var>i</var>. This is a | |
| 103 | thin wrapper around either <tt class="cfunction">sigaction()</tt> or | |
| 104 | <tt class="cfunction">signal()</tt>. Do not call those functions directly! | |
| 105 | <tt class="ctype">PyOS_sighandler_t</tt> is a typedef alias for <tt class="ctype">void | |
| 106 | (*)(int)</tt>. | |
| 107 | </dd></dl> | |
| 108 | ||
| 109 | <P> | |
| 110 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>PyOS_sighandler_t <b><tt id='l2h-161' xml:id='l2h-161' class="cfunction">PyOS_setsig</tt></b>(</nobr></td><td>int <var>i</var>, PyOS_sighandler_t <var>h</var>)</td></tr></table></dt> | |
| 111 | <dd> | |
| 112 | Set the signal handler for signal <var>i</var> to be <var>h</var>; return the | |
| 113 | old signal handler. This is a thin wrapper around either | |
| 114 | <tt class="cfunction">sigaction()</tt> or <tt class="cfunction">signal()</tt>. Do not call those | |
| 115 | functions directly! <tt class="ctype">PyOS_sighandler_t</tt> is a typedef alias | |
| 116 | for <tt class="ctype">void (*)(int)</tt>. | |
| 117 | </dd></dl> | |
| 118 | ||
| 119 | <P> | |
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| 135 | <td align="center" width="100%">Python/C API Reference Manual</td> | |
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| 155 | <span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span> | |
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