Add a "translated type" argument to SDT_PROBE_ARGTYPE() and add some macros
which allow one to define SDT probes that specify translated types. The idea is to make it easy to write SDT probe definitions that can work across multiple operating systems. In particular, this makes it possible to port illumos SDT probes to FreeBSD without changing their argument types, so long as the appropriate translators are defined. Then DTrace scripts written for Solaris/illumos will work on FreeBSD without any changes. MFC after: 1 week
This commit is contained in:
Mark Johnston
parent
1570438586
commit
7bc992c037
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=254468
@ -201,11 +201,15 @@ sdt_getargdesc(void *arg, dtrace_id_t id, void *parg, dtrace_argdesc_t *desc)
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if (desc->dtargd_ndx < probe->n_args) {
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TAILQ_FOREACH(argtype, &probe->argtype_list, argtype_entry) {
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if (desc->dtargd_ndx == argtype->ndx) {
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/* XXX */
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desc->dtargd_mapping = desc->dtargd_ndx;
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strlcpy(desc->dtargd_native, argtype->type,
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sizeof(desc->dtargd_native));
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desc->dtargd_xlate[0] = '\0'; /* XXX */
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if (argtype->xtype != NULL)
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strlcpy(desc->dtargd_xlate,
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argtype->xtype,
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sizeof(desc->dtargd_xlate));
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else
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desc->dtargd_xlate[0] = '\0';
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}
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}
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} else
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145
sys/sys/sdt.h
145
sys/sys/sdt.h
@ -87,7 +87,7 @@
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#define SDT_PROBE_DEFINE(prov, mod, func, name, sname)
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#define SDT_PROBE_DECLARE(prov, mod, func, name)
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#define SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4)
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#define SDT_PROBE_ARGTYPE(prov, mod, func, name, num, type)
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#define SDT_PROBE_ARGTYPE(prov, mod, func, name, num, type, xtype)
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#define SDT_PROBE_DEFINE0(prov, mod, func, name, sname)
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#define SDT_PROBE_DEFINE1(prov, mod, func, name, sname, arg0)
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@ -110,6 +110,22 @@
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#define SDT_PROBE7(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4, arg5, \
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arg6)
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#define SDT_PROBE_DEFINE0_XLATE(prov, mod, func, name, sname)
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#define SDT_PROBE_DEFINE1_XLATE(prov, mod, func, name, sname, arg0, xarg0)
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#define SDT_PROBE_DEFINE2_XLATE(prov, mod, func, name, sname, arg0, xarg0, \
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arg1, xarg1)
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#define SDT_PROBE_DEFINE3_XLATE(prov, mod, func, name, sname, arg0, xarg0, \
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arg1, xarg1, arg2, xarg2)
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#define SDT_PROBE_DEFINE4_XLATE(prov, mod, func, name, sname, arg0, xarg0, \
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arg1, xarg1, arg2, xarg2, arg3, xarg3)
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#define SDT_PROBE_DEFINE5_XLATE(prov, mod, func, name, sname, arg0, xarg0, \
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arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4)
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#define SDT_PROBE_DEFINE6_XLATE(prov, mod, func, name, sname, arg0, xarg0, \
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arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4, arg5, xarg5)
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#define SDT_PROBE_DEFINE7_XLATE(prov, mod, func, name, sname, arg0, xarg0, \
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arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4, arg5, xarg5, arg6, \
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xarg6)
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#else
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SET_DECLARE(sdt_providers_set, struct sdt_provider);
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@ -143,9 +159,9 @@ SET_DECLARE(sdt_argtypes_set, struct sdt_argtype);
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(uintptr_t) arg3, (uintptr_t) arg4); \
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} while (0)
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#define SDT_PROBE_ARGTYPE(prov, mod, func, name, num, type) \
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#define SDT_PROBE_ARGTYPE(prov, mod, func, name, num, type, xtype) \
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static struct sdt_argtype sdt_##prov##_##mod##_##func##_##name##num[1] \
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= { { num, type, { NULL, NULL }, \
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= { { num, type, xtype, { NULL, NULL }, \
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sdt_##prov##_##mod##_##func##_##name } \
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}; \
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DATA_SET(sdt_argtypes_set, sdt_##prov##_##mod##_##func##_##name##num);
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@ -155,54 +171,113 @@ SET_DECLARE(sdt_argtypes_set, struct sdt_argtype);
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#define SDT_PROBE_DEFINE1(prov, mod, func, name, sname, arg0) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0)
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL)
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#define SDT_PROBE_DEFINE2(prov, mod, func, name, sname, arg0, arg1) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1)
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL)
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#define SDT_PROBE_DEFINE3(prov, mod, func, name, sname, arg0, arg1, arg2)\
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2)
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL)
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#define SDT_PROBE_DEFINE4(prov, mod, func, name, sname, arg0, arg1, arg2, arg3) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3)
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL)
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#define SDT_PROBE_DEFINE5(prov, mod, func, name, sname, arg0, arg1, arg2, arg3, arg4) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4)
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, NULL)
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#define SDT_PROBE_DEFINE6(prov, mod, func, name, sname, arg0, arg1, arg2, arg3,\
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arg4, arg5) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5);
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5, NULL)
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#define SDT_PROBE_DEFINE7(prov, mod, func, name, sname, arg0, arg1, arg2, arg3,\
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arg4, arg5, arg6) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 6, arg6);
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5, NULL); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 6, arg6, NULL)
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#define SDT_PROBE_DEFINE0_XLATE(prov, mod, func, name, sname) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname)
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#define SDT_PROBE_DEFINE1_XLATE(prov, mod, func, name, sname, arg0, xarg0) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0)
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#define SDT_PROBE_DEFINE2_XLATE(prov, mod, func, name, sname, arg0, xarg0, \
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arg1, xarg1) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1)
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#define SDT_PROBE_DEFINE3_XLATE(prov, mod, func, name, sname, arg0, xarg0, \
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arg1, xarg1, arg2, xarg2) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2)
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#define SDT_PROBE_DEFINE4_XLATE(prov, mod, func, name, sname, arg0, xarg0, \
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arg1, xarg1, arg2, xarg2, arg3, xarg3) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3)
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#define SDT_PROBE_DEFINE5_XLATE(prov, mod, func, name, sname, arg0, xarg0, \
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arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, xarg4)
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#define SDT_PROBE_DEFINE6_XLATE(prov, mod, func, name, sname, arg0, xarg0, \
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arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4, arg5, xarg5) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, xarg4); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5, xarg5)
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#define SDT_PROBE_DEFINE7_XLATE(prov, mod, func, name, sname, arg0, xarg0, \
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arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4, arg5, xarg5, arg6, \
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xarg6) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, xarg4); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5, xarg5); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 6, arg6, xarg6)
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#define SDT_PROBE0(prov, mod, func, name) \
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SDT_PROBE(prov, mod, func, name, 0, 0, 0, 0, 0)
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@ -257,12 +332,12 @@ struct sdt_provider;
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struct linker_file;
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struct sdt_argtype {
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int ndx; /* Argument index. */
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const char *type; /* Argument type string. */
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int ndx; /* Argument index. */
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const char *type; /* Argument type string. */
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const char *xtype; /* Translated argument type. */
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TAILQ_ENTRY(sdt_argtype)
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argtype_entry; /* Argument type list entry. */
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struct sdt_probe
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*probe; /* Ptr to the probe structure. */
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struct sdt_probe *probe; /* Ptr to the probe structure. */
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};
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struct sdt_probe {
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