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deleted: arduino_new/arduino_new.ino

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This commit is contained in:
david gauchard 2020-08-17 18:23:44 +02:00
parent 6925982284
commit 385bfd7635
1 changed files with 0 additions and 159 deletions
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159
libraries/esp8266/examples/arduino_new/arduino_new.ino
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@ -1,159 +0,0 @@
// show arduino_new benefits
// released to public domain
// result is below
class SomeClass {
public:
SomeClass(const String& s1 = emptyString, const String& s2 = emptyString) {
Serial.printf("SomeClass@%p(%s)(%s)\n", this, s1.c_str(), s2.c_str());
}
~SomeClass() {
Serial.printf("~ SomeClass @%p\n", this);
}
};
class oom {
private:
char large [65000];
public:
oom() {
Serial.printf("this constructor should not be called\n");
}
};
void setup() {
Serial.begin(115200);
Serial.printf("\n\narduino_new benefits\n\n");
delay(5000); // avoid too frequent bootloop
// arduino_new / arduino_newarray api
Serial.printf("\n----- arduino_new:\n");
auto an = arduino_new(SomeClass);
delete an;
Serial.printf("\n----- arduino_new with oom:\n");
auto anoom = arduino_new(oom);
Serial.printf("nullptr: %p\n", anoom);
delete anoom;
Serial.printf("\n----- arduino_new with constructor parameters:\n");
auto ancp = arduino_new(SomeClass, "param1", "param2");
delete ancp;
Serial.printf("\n----- arduino_newarray[2]\n");
auto ana2 = arduino_newarray(SomeClass, 2);
Serial.printf("@:%p s=%zd s(2)=%zd\n", ana2, sizeof(SomeClass), sizeof(SomeClass[2]));
Serial.printf("0: %p\n", &ana2[0]);
Serial.printf("1: %p\n", &ana2[1]);
delete [] ana2;
Serial.printf("\n----- arduino_newarray[2] (with constructor parameters)\n");
auto ana2cp = arduino_newarray(SomeClass, 2, "param1");
Serial.printf("@:%p s=%zd s(2)=%zd\n", ana2cp, sizeof(SomeClass), sizeof(SomeClass[2]));
Serial.printf("0: %p\n", &ana2cp[0]);
Serial.printf("1: %p\n", &ana2cp[1]);
delete [] ana2cp;
Serial.printf("\n----- arduino_newarray[100000]\n");
auto anaX = arduino_newarray(SomeClass, 100000);
Serial.printf("@:%p\n", anaX);
// standard c++ api for new and new[]
Serial.printf("\n----- new\n");
auto sn = new SomeClass;
delete sn;
Serial.printf("\n----- new with oom: (abort() with option 'Exceptions: Disabled (new can abort)'\n");
auto snoom = new oom;
Serial.printf("nullptr: %p\n", snoom);
delete snoom;
Serial.printf("\n----- new[2]\n");
auto sna2 = new SomeClass[2];
Serial.printf("@:%p s=%zd s(2)=%zd\n", sna2, sizeof(SomeClass), sizeof(SomeClass[2]));
Serial.printf("0: %p\n", &sna2[0]);
Serial.printf("1: %p\n", &sna2[1]);
delete [] sna2;
Serial.printf("\n----- new[10000] (badly fails with 'Exceptions: Legacy' or '...Disabled'\n");
auto snaX = new SomeClass[100000];
Serial.printf("@:%p\n", snaX);
}
void loop() {
}
//////////////////////////////
/*
Result with:
Exceptions: Legacy(new can return nullptr)
//////////////////////////////
arduino_new benefits
----- arduino_new:
SomeClass@0x3fff1864()()
~ SomeClass @0x3fff1864
----- arduino_new with oom:
nullptr: 0
----- arduino_new with constructor parameters:
SomeClass@0x3fff1864(param1)(param2)
~ SomeClass @0x3fff1864
----- arduino_newarray[2]
SomeClass@0x3fff1868()()
SomeClass@0x3fff1869()()
@: 0x3fff1868 s = 1 s(2) = 2
0: 0x3fff1868
1: 0x3fff1869
~ SomeClass @0x3fff1869
~ SomeClass @0x3fff1868
----- arduino_newarray[2](with constructor parameters)
SomeClass@0x3fff1868(param1)()
SomeClass@0x3fff1869(param1)()
@: 0x3fff1868 s = 1 s(2) = 2
0: 0x3fff1868
1: 0x3fff1869
~ SomeClass @0x3fff1869
~ SomeClass @0x3fff1868
----- arduino_newarray[100000]
@: 0
----- new
SomeClass@0x3fff1864()()
~ SomeClass @0x3fff1864
----- new with oom: (abort() with option 'Exceptions: Disabled (new can abort)'
this constructor should not be called
nullptr: 0
----- new[2]
SomeClass@0x3fff1868()()
SomeClass@0x3fff1869()()
@:0x3fff1868 s = 1 s(2) = 2
0: 0x3fff1868
1: 0x3fff1869
~ SomeClass @0x3fff1869
~ SomeClass @0x3fff1868
----- new[10000](badly fails with 'Exceptions: Legacy' or '...Disabled'
Exception(29):
epc1 = 0x402013de epc2 = 0x00000000 epc3 = 0x00000000 excvaddr = 0x00000000 depc = 0x00000000
>>> stack >>>
...
*/
/////////////////////////////